Progress in palladium-based bimetallic catalysts for lean methane combustion: Towards harsh industrial applications
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PUBLIC SUMMARY
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Research advancements in Pd-based bimetallic catalysts for lean methane combustion were reviewed.
Design strategies to enhance catalyst stability, activity, and resistance to poisoning were discussed.
Trends and challenges in Pd-based catalysts for industrial applications are presented.
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ABSTRACT
Significant volumes of lean methane (0.1–1.0 vol%) are released untreated into the atmosphere during industrial operations, contributing to the greenhouse effect and energy wastage. Catalytic methane combustion presents a promising avenue to mitigate these emissions. Depending on their active components, catalytic systems are predominantly categorized into noble metal-based and non-noble metal-based catalysts, with palladium (Pd)-based catalysts recognized for their superior low-temperature oxidation activity. Nevertheless, enhancing the thermal stability of Pd remains challenging, complicated by impurities such as H2O, SO2 and H2S in the lean methane stream, which can cause catalyst poisoning and deactivation. Recent research has focused on the design of Pd-based bimetallic catalysts, offering improved stability, activity, and resistance to poisoning in harsh industrial conditions. This review examines advancements in improving the deactivation resistance of Pd-based bimetallic catalysts for lean methane combustion, covering active site characterization, dispersion and metal-support interactions, the role of auxiliary metals, and structural modulation strategies. It also investigates the impact of harsh industrial environments on Pd-based catalyst performance, focusing on deactivation mechanisms and mitigation strategies. Ultimately, this review identifies current research trends and challenges for Pd-based catalysts in demanding applications. By providing insights into the design of Pd-based catalysts with enhanced stability, activity, and resistance to poisoning, this review aims to guide the development of catalysts that meet industrial demands. -
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REFERENCES
[1] Shindell D. Ravishankara A. R. and Mugridge K. (2022). Global methane assessment: 2030 baseline report why act now: A new era for accelerated implementation. Conference of the Parties. [2] International Energy Agency. (2024). Global methane tracker 2024. https://www.iea.org/reports/global-methane-tracker-2024. [3] International Energy Agency. (2022). Global methane tracker 2022. https://www.iea.org/reports/global-methane-tracker-2022. [4] International Energy Agency. (2024). Methane tracker database. https://www.iea.org/data-and-statistics/data-product/methane-tracker-database. [5] Lin G., Jiang D., Zhang W., et al. (2024). China should be wary of the methane emissions from mine closure. Innov. Energy 1:100024. DOI:10.59717/j.xinn-energy.2024.100024 [6] Gong J., Wang D., Li J., et al. (2017). Dynamic oxygen storage modeling in a three-way catalyst for natural gas engines: A dual-site and shrinking-core diffusion approach. Appl. Catal. B-Environ. 203:936−945. DOI:10.1016/j.apcatb.2016.11.005 [7] Thiruvengadam A., Besch M. C., Thiruvengadam P., et al. (2015). Emission rates of regulated pollutants from current technology heavy-duty diesel and natural gas goods movement vehicles. Environ. Sci. Technol. 49:5236−5244. DOI:10.1021/acs.est.5b00943 [8] Qiu R., Wang W., Wang Z., et al. (2023). Advancement of modification engineering in lean methane combustion catalysts based on defect chemistry. Catal. Sci. Technol. 13:2566−2584. DOI:10.1039/d3cy00087g [9] Intergovernmental Panel on Climate Change. (2018). Global warming of 1.5 °C. https://www.ipcc.ch/sr15/. [10] Ming T., Li W., Yuan Q., et al. (2022). Perspectives on removal of atmospheric methane. Adv. Appl. Energy 5:100085. DOI:10.1016/j.adapen.2022.100085 [11] European-Commission (2021). Joint EU-US press release on the global methane pledge. https://ec.europa.eu/commission/presscorner/detail/en/IP_21_4785. [12] Lin H., Liu Y., Deng J., et al. (2023). Methane combustion over the porous oxides and supported noble metal catalysts. Catalysts 13:427. DOI:10.3390/catal13020427 [13] Nkinahamira F., Yang R., Zhu R., et al. (2023). Current progress on methods and technologies for catalytic methane activation at low temperatures. Adv. Sci. 10:2204566. DOI:10.1002/advs.202204566 [14] Wang X., Liu Y., Ge W., et al. (2023). Complete oxidation of lean methane over metal oxide supported Pd catalysts: Current advancement and future perspectives. J. Environ. Chem. Eng. 11:110712. DOI:10.1016/j.jece.2023.110712 [15] Karavalakis G., Hajbabaei M., Jiang Y., et al. (2016). Regulated, greenhouse gas, and particulate emissions from lean-burn and stoichiometric natural gas heavy-duty vehicles on different fuel compositions. Fuel 175:146−156. DOI:10.1016/j.fuel.2016.02.034 [16] Sadokhina N., Smedler G., Nylén U., et al. (2017). The influence of gas composition on Pd-based catalyst activity in methane oxidation − inhibition and promotion by NO. Appl. Catal. B-Environ. 200:351−360. DOI:10.1016/j.apcatb.2016.07.012 [17] Liu Z., Xu G., Zeng L., et al. (2023). Anchoring Pt-doped PdO nanoparticles on γ-Al2O3 with highly dispersed La sites to create a methane oxidation catalyst. Appl. Catal. B-Environ. 324:122259. DOI:10.1016/j.apcatb.2022.122259 [18] Wang X., Xu X., Xiong W., et al. (2024). Hydrophobic modification of small-pore Pd-SSZ-13 zeolites for catalytic methane combustion. Top. Catal. DOI:10.1007/s11244-024-01923-x. [19] Feng X., Jiang L., Li D., et al. (2022). Progress and key challenges in catalytic combustion of lean methane. J. Energy Chem. 75:173−215. DOI:10.1016/j.jechem.2022.08.001 [20] Liu X., Chen J., Han B., et al. (2024). Lean methane combustion over zeolite-supported Pd catalysts: Structure-performance relationship and deactivation mechanism. J. Environ. Sci. 145:128−138. DOI:10.1016/j.jes.2023.08.025 [21] Pawlaczyk-Kurek A. and Suwak M. (2021). Will it be possible to put into practice the mitigation of ventilation air methane emissions. Review on the state-of-the-art and emerging materials and technologies. Catalysts 11:1141. DOI:10.3390/catal11101141 [22] Liu Y., Wang S., Sun T., et al. (2012). Enhanced hydrothermal stability of high performance lean fuel combustion alumina-supported palladium catalyst modified by nickel. Appl. Catal. B-Environ. 119-120:321−328. DOI:10.1016/j.apcatb.2012.02.032 [23] Su S., Chen H., Teakle P., et al. (2008). Characteristics of coal mine ventilation air flows. J. Environ. Manage. 86:44−62. DOI:10.1016/j.jenvman.2006.11.025 [24] Setiawan A., Friggieri J., Kennedy E. M., et al. (2014). Catalytic combustion of ventilation air methane (VAM) – long term catalyst stability in the presence of water vapour and mine dust. Catal. Sci. Technol. 4:1793−1802. DOI:10.1039/c4cy00120f [25] Hinde P., Mitchell I. and Riddell M. (2016). CometTM − a new ventilation air methane (VAM) abatement technology. Johnson Matthey Tech. 60:211−221. DOI:10.1595/205651316X692059 [26] Gélin P., Urfels L., Primet M., et al. (2003). Complete oxidation of methane at low temperature over Pt and Pd catalysts for the abatement of lean-burn natural gas fuelled vehicles emissions: influence of water and sulphur containing compounds. Catal. Today 83:45−57. DOI:10.1016/S0920-5861(03)00215-3 [27] Zhao G., Pan X., Zhang Z., et al. (2020). A thin-felt Pd–MgO–Al2O3/Al-fiber catalyst for catalytic combustion of methane with resistance to water-vapor poisoning. J. Catal. 384:122−135. DOI:10.1016/j.jcat.2020.01.013 [28] Lou B., Shakoor N., Adeel M., et al. (2022). Catalytic oxidation of volatile organic compounds by non-noble metal catalyst: Current advancement and future prospectives. J. Clean. Prod. 363:132523. DOI:10.1016/j.jclepro.2022.132523 [29] Jackson R. B., Solomon E., Canadell J., et al. (2019). Methane removal and atmospheric restoration. Nat. Sustain. 2:436−438. DOI:10.1038/s41893-019-0299-x [30] Yang X. and Teng F. (2018). The air quality co-benefit of coal control strategy in China. Resour. Conserv. Recy. 129:373−382. DOI:10.1016/j.resconrec.2016.08.011 [31] Zou X., Liu J., Gao Y., et al. (2023). The mechanism on enhancing heat and mass transfer property for improving CH4 catalytic combustion performance of hollow CeO2 microspheres. Chem. Eng. J. 277:118837. DOI:10.1016/j.ces.2023.118837 [32] Zhu W., Jin J., Chen X., et al. (2018). Enhanced activity and stability of La-doped CeO2 monolithic catalysts for lean-oxygen methane combustion. Environ. Sci. Pollut. R. 25:5643−5654. DOI:10.1007/s11356-017-0934-x [33] Fan C., Wu Z., Li Z., et al. (2023). Controllable preparation of ultrafine Co3O4 nanoparticles on H-ZSM-5 with superior catalytic performance in lean methane combustion. Fuel 334:126815. DOI:10.1016/j.fuel.2022.126815 [34] Fei Z., He S., Li L., et al. (2012). Morphology-directed synthesis of Co3O4 nanotubes based on modified Kirkendall effect and its application in CH4 combustion. Chem. Commun. 48:853−855. DOI:10.1039/c1cc15976c [35] Shao X., He J., Su Q., et al. (2022). Synergy effect of CuO on CuCo2O4 for methane catalytic combustion. RSC Adv. 12:17490−17497. DOI:10.1039/d2ra02237k [36] Águila G., Gracia F., Cortés J., et al. (2008). Effect of copper species and the presence of reaction products on the activity of methane oxidation on supported CuO catalysts. Appl. Catal. B-Environ. 77:325−338. DOI:10.1016/j.apcatb.2007.08.002 [37] Akbari E., Alavi S. M., Rezaei M., et al. (2021). Catalytic methane combustion on the hydrothermally synthesized MnO2 nanowire catalysts. Ind. Eng. Chem. Res. 60:7572−7587. DOI:10.1021/acs.iecr.1c00881 [38] Xu H., Li D., Jiang L., et al. (2024). Enhanced thermal stability of lean methane combustion by structural interactions of CeO2 with Pt/3DOM LaFeO3 catalysts. Fuel 364:131069. DOI:10.1016/j.fuel.2024.131069 [39] Jiang L., Li D., Deng G., et al. (2023). Design of hybrid La1-xCexCoO3-δ catalysts for lean methane combustion via creating active Co and Ce species. Chem. Eng. J. 456 . DOI:10.1016/j.cej.2022.141054. [40] Chen H., Li J., Cui W., et al. (2020). Precise fabrication of surface-reconstructed LaMnO3 perovskite with enhanced catalytic performance in CH4 oxidation. Appl. Surf. Sci. 505:144112. DOI:10.1016/j.apsusc.2019.144112 [41] Zhu Y., Sun Y., Niu X., et al. (2010). Preparation of La-Mn-O perovskite catalyst by microwave irradiation method and its application to methane combustion. Catal. Lett. 135:152−158. DOI:10.1007/s10562-009-0034-8 [42] Wang T., Qiu L., Li H., et al. (2021). Facile synthesis of palladium incorporated NiCo2O4 spinel for low temperature methane combustion: Activate lattice oxygen to promote activity. J. Catal. 404:400−410. DOI:10.1016/j.jcat.2021.10.018 [43] Zhang Z., Li J., Yi T., et al. (2018). Surface density of synthetically tuned spinel oxides of Co3+ and Ni3+ with enhanced catalytic activity for methane oxidation. Chinese J. Catal. 39:1228−1239. DOI:10.1016/S1872-2067(18)63055-4 [44] Huang F., Wang X., Wang A., et al. (2016). A two-step synthesis of Fe-substituted hexaaluminates with enhanced surface area and activity in methane catalytic combustion. Catal. Sci. Technol. 6:4962−4969. DOI:10.1039/c5cy02187a [45] Xiong H., Kunwar D., Jiang D., et al. (2021). Engineering catalyst supports to stabilize PdOx two-dimensional rafts for water-tolerant methane oxidation. Nat. Catal. 4:830−839. DOI:10.1038/s41929-021-00680-4 [46] Yang J., Peng M., Ren G., et al. (2020). A hydrothermally stable Irreducible oxide‐modified Pd/MgAl2O4 catalyst for methane combustion. Angew. Chem. Int. Edit. 59:18522−18526. DOI:10.1002/anie.202009050 [47] Petrov A. W., Ferri D., Krumeich F., et al. (2018). Stable complete methane oxidation over palladium based zeolite catalysts. Nat. Commun. 9:2545. DOI:10.1038/s41467-018-04748-x [48] Gélin P. and Primet M. (2002). Complete oxidation of methane at low temperature over noble metal based catalysts: a review. Appl. Catal. B-Environ. 39:1−37. DOI:10.1016/S0926-3373(02)00076-0 [49] Wang M., Dimopoulos Eggenschwiler P., Franken T., et al. (2022). Investigation on the role of Pd, Pt, Rh in methane abatement for heavy duty applications. Catalysts 12:373. DOI:10.3390/catal12040373 [50] Joshi S. Y., Ren Y., Harold M. P., et al. (2012). Experimental and theoretical investigation of controlling regimes during lean oxidation of methane and propylene on Pt/Al2O3 monolithic reactors. Ind. Eng. Chem. Res. 51:7482−7492. DOI:10.1021/ie201653e [51] Setiawan A., Kennedy E. M., Dlugogorski B. Z., et al. (2015). The stability of Co3O4, Fe2O3, Au/Co3O4 and Au/Fe2O3 catalysts in the catalytic combustion of lean methane mixtures in the presence of water. Catal. Today 258:276−283. DOI:10.1016/j.cattod.2014.11.031 [52] Istratescu G. M. and Hayes R. E. (2023). Ageing studies of Pt- and Pd-based catalysts for the combustion of lean methane mixtures. Processes 11:1373. DOI:10.3390/pr11051373 [53] Kumsung W., Chareonpanich M., Kongkachuichay P., et al. (2018). Single and bimetallic catalyst screenings of noble metals for methane combustion. Catal. Commun. 110:83−87. DOI:10.1016/j.catcom.2018.03.022 [54] Zhao S. and Li J. (2015). Silver-cobalt oxides derived from silver nanoparticles deposited on layered double hydroxides for methane combustion. ChemCatChem 7:1966−1974. DOI:10.1002/cctc.201500254 [55] Arandiyan H., Dai H., Deng J., et al. (2014). Three-dimensionally ordered macroporous La0.6Sr0.4MnO3 supported Ag nanoparticles for the combustion of methane. J. Phys. Chem. C 118 :14913-14928. DOI:10.1021/jp502256t. [56] Okal J., Zawadzki M. and Baranowska K. (2016). Methane combustion over bimetallic Ru-Re/γ-Al2O3 catalysts: Effect of Re and pretreatments. Appl. Catal. B-Environ. 194:22−31. DOI:10.1016/j.apcatb.2016.04.038 [57] Khalid O., Spriewald Luciano A., Drazic G., et al. (2021). Mixed RuxIr1−xO2 supported on rutile TiO2: Catalytic methane combustion, a model study. ChemCatChem 13:3983−3994. DOI:10.1002/cctc.202100858 [58] Lin L., Shi Z., Huang J., et al. (2020). Molecular adsorption properties of CH4 with noble metals doped onto oxygen vacancy defect of anatase TiO2 (101) surface: First-principles calculations. Appl. Surf. Sci. 514:145900. DOI:10.1016/j.apsusc.2020.145900 [59] Liu S., Geng Z., Wang Y., et al. (2012). Methane activation by MH+ (M = Os, Ir, and Pt) and comparisons to the congeners of MH+ (M = Fe, Co, Ni and Ru, Rh, Pd). J. Phys. Chem. A 116:4560−4568. DOI:10.1021/jp210924a [60] Fung V., Tao F. F. and Jiang D.-E. (2018). Low-temperature activation of methane on doped single atoms: descriptor and prediction. Phys. Chem. Chem. Phys. 20:22909−22914. DOI:10.1039/c8cp03191f [61] Liang Z., Li T., Kim M., et al. (2017). Low-temperature activation of methane on the IrO2(110) surface. Science 356:299−303. DOI:10.1126/science.aam9147 [62] Wang T., Wang J., Sun Y., et al. (2019). Origin of electronic structure dependent activity of spinel ZnNixCo2-xO4 oxides for complete methane oxidation. Appl. Catal. B-Environ. 256:117844. DOI:10.1016/j.apcatb.2019.118340 [63] Zhao Y., Gu Z., Li D., et al. (2022). Catalytic combustion of lean methane over MnCo2O4/SiC catalysts: Enhanced activity and sulfur resistance. Fuel 323:124399. DOI:10.1016/j.fuel.2022.124399 [64] Oh J., Boucly A., van Bokhoven J. A., et al. (2024). Palladium catalysts for methane oxidation: Old materials, new challenges. Acc. Chem. Res. 57:23−36. DOI:10.1021/acs.accounts.3c00454 [65] Murata K., Kosuge D., Ohyama J., et al. (2020). Exploiting metal–support interactions to tune the redox properties of supported Pd catalysts for methane combustion. ACS Catal. 10:1381−1387. DOI:10.1021/acscatal.9b04524 [66] Zou X., Chen J., Rui Z., et al. (2020). Sequential growth reveals multi-spinel interface promotion for methane combustion over alumina supported palladium catalyst. Appl. Catal. B-Environ. 273:119071. DOI:10.1016/j.apcatb.2020.119071 [67] Cai J., Wang J., Liu C., et al. (2024). Electron transferring with oxygen defects on Ni-promoted Pd/Al2O3 catalysts for low-temperature lean methane combustion. J. Colloid Interf. Sci. 671:712−724. DOI:10.1016/j.jcis.2024.05.196 [68] Tan Y., Zhang Y., Gao Y., et al. (2024). Redox-driven surface generation of highly active Pd/PdO interface boosting low-temperature methane combustion. Chinese J. Catal. 60:242−252. DOI:10.1016/S1872-2067(24)60021-5 [69] Dai Y. Q., Lu P., Cao Z. M., et al. (2018). The physical chemistry and materials science behind sinter-resistant catalysts. Chem. Soc. Rev. 47:4314−4331. DOI:10.1039/c7cs00650k [70] Cao S.-Y., Ye F., Zhang N.-N., et al. (2023). Synergistic effect of bimetallic RuPt/TiO2 catalyst in methane combustion. Rare Metals 42:165−175. DOI:10.1007/s12598-022-02118-7 [71] Ma Y., Li S., Zhang T., et al. (2021). Construction of a Pd(PdO)/Co3O4@SiO2 core–shell structure for efficient low-temperature methane combustion. Nanoscale 13:5026−5032. DOI:10.1039/d0nr08723h [72] Stefanov P., Todorova S., Naydenov A., et al. (2015). On the development of active and stable Pd–Co/γ-Al2O3 catalyst for complete oxidation of methane. Chem. Eng. J. 266:329−338. DOI:10.1016/j.cej.2014.12.099 [73] Kifle G. A., Huang Y., Xiang M. H., et al. (2022). Heterogeneous activation of peroxygens by iron-based bimetallic nanostructures for the efficient remediation of contaminated water. A review. Chem. Eng. J. 442:136187. DOI:10.1016/j.cej.2022.136187 [74] Khan W. U., Alasiri H. S., Ali S. A., et al. (2022). Recent advances in bimetallic catalysts for hydrogen production from ammonia. Chem. Rec. 22:e202200030. DOI:10.1002/tcr.202200030 [75] Wu P. Y. and Cai C. (2022). Supported Pt-Ni bimetallic nanoparticles catalyzed hydrodeoxygenation of dibenzofuran with high selectivity to bicyclohexane. Chinese Chem. Lett. 33:234−238. DOI:10.1016/j.cclet.2021.05.059 [76] Fu J. W., Liu K., Li H. M., et al. (2022). Bimetallic atomic site catalysts for CO2 reduction reactions: a review. Environ. Chem. Lett. 20:243−262. DOI:10.1007/s10311-021-01335-3 [77] Mohd-Nasir N. S., Osazuwa O. U. and Abidin S. Z. (2021). Synergistic catalysis of bi-metals in the reforming of biomass-derived hydrocarbons: A review. Int. J. Hydrog. Energy 46:31000−31023. DOI:10.1016/j.ijhydene.2021.01.144 [78] Liao F. L., Lo T. W. B. and Tsang S. C. E. (2015). Recent developments in palladium-based bimetallic catalysts. ChemCatChem 7:1998−2014. DOI:10.1002/cctc.201500245 [79] Willis J. J., Goodman E. D., Wu L., et al. (2017). Systematic identification of promoters for methane oxidation catalysts using size- and composition-controlled Pd-based bimetallic nanocrystals. J. Am. Chem. Soc. 139:11989−11997. DOI:10.1021/jacs.7b06260 [80] Friberg I., Sadokhina N. and Olsson L. (2018). Complete methane oxidation over Ba modified Pd/Al2O3: The effect of water vapor. Appl. Catal. B-Environ. 231:242−250. DOI:10.1016/j.apcatb.2018.03.003 [81] Velin P., Hemmingsson F., Schaefer A., et al. (2021). Hampered PdO redox dynamics by water suppresses lean methane oxidation over realistic palladium catalysts. ChemCatChem 13:3765−3771. DOI:10.1002/cctc.202100829 [82] Jiménez-Borja C., Delgado B., Dorado F., et al. (2013). Experimental data and kinetic modeling of the catalytic and electrochemically promoted CH4 oxidation over Pd catalyst-electrodes. Chem. Eng. J. 225:315−322. DOI:10.1016/j.cej.2013.03.095 [83] Lott P., Casapu M., Grunwaldt J.-D., et al. (2024). A review on exhaust gas after-treatment of lean-burn natural gas engines – From fundamentals to application. Appl. Catal. B-Environ. 340:123241. DOI:10.1016/j.apcatb.2023.123241 [84] Tang Z., Zhang T., Luo D., et al. (2022). Catalytic combustion of methane: from mechanism and materials properties to catalytic performance. ACS Catal. 12:13457−13474. DOI:10.1021/acscatal.2c03321 [85] Giannikos A., Frantzis A. D., Pliangos C., et al. (1998). Electrochemical promotion of CH4 oxidation on Pd. Ionics 4:53−60. DOI:10.1007/BF02375780 [86] Seimanides S. and Stoukides M. (1986). Catalytic oxidation of methane on polycrystalline palladium supported on stabilized zirconia. J. Catal. 98:540−549. DOI:10.1016/0021-9517(86)90342-8 [87] Wang Y., Hu P., Yang J., et al. (2021). C-H bond activation in light alkanes: a theoretical perspective. Chem. Soc. Rev. 5:4299−4358. DOI:10.1039/d0cs01262a [88] Feng X., Liu D., Yan B., et al. (2021). Highly active PdO/Mn3O4/CeO2 nanocomposites supported on one dimensional halloysite nanotubes for photoassisted thermal catalytic methane combustion. Angew. Chem. Int. Edit. 60:18552−18556. DOI:10.1002/anie.202107226 [89] Stotz H., Maier L., Boubnov A., et al. (2019). Surface reaction kinetics of methane oxidation over PdO. J. Catal. 370:152−175. DOI:10.1016/j.jcat.2018.12.007 [90] Hayes R. E., Kolaczkowski S. T., Li P. K. C., et al. (2001). The palladium catalysed oxidation of methane: reaction kinetics and the effect of diffusion barriers. Chem. Eng. Sci. 56:4815−4835. DOI:10.1016/S0009-2509(01)00131-2 [91] Todorova S., Naydenov A., Kolev H., et al. (2018). Reaction kinetics and mechanism of complete methane oxidation on Pd/Mn2O3 catalyst. React. Kinet. Mech. Cat. 123:585−605. DOI:10.1007/s11144-018-1343-y [92] Ciuparu D., Altman E. and Pfefferle L. (2001). Contributions of lattice oxygen in methane combustion over PdO-based catalysts. J. Catal. 203:64−74. DOI:10.1006/jcat.2001.3331 [93] Xu J., Ouyang L., Mao W., et al. (2012). Operando and kinetic study of low-temperature, lean-burn methane combustion over a Pd/γ-Al2O3 catalyst. ACS Catal. 2:261−269. DOI:10.1021/cs200694k [94] Matam S. K., Aguirre M. H., Weidenkaff A., et al. (2010). Revisiting the problem of active sites for methane combustion on Pd/Al2O3 by operando XANES in a lab-scale fixed-bed reactor. J. Phys. Chem. C 114:9439−9443. DOI:10.1021/jp1019697 [95] Grunwaldt J.-D., van Vegten N. and Baiker A. (2007). Insight into the structure of supported palladium catalysts during the total oxidation of methane. Chem. Commun. 44:4635−4637. DOI:10.1039/b710222d [96] Datye A. K., Bravo J., Nelson T. R., et al. (2000). Catalyst microstructure and methane oxidation reactivity during the Pd↔PdO transformation on alumina supports. Appl. Catal. A-Gen. 198:179−196. DOI:10.1016/S0926-860X(99)00512-8 [97] Lyubovsky M. and Pfefferle L. (1999). Complete methane oxidation over Pd catalyst supported on α-alumina. Influence of temperature and oxygen pressure on the catalyst activity. Catal. Today 47:29−44. DOI:10.1016/S0920-5861(98)00281-8 [98] Xiong H., Wiebenga M. H., Carrillo C., et al. (2018). Design considerations for low-temperature hydrocarbon oxidation reactions on Pd based catalysts. Appl. Catal. B-Environ. 236:436−444. DOI:10.1016/j.apcatb.2018.05.049 [99] Farrauto R. J., Hobson M. C., Kennelly T., et al. (1992). Catalytic chemistry of supported palladium for combustion of methane. Appl. Catal. A-Gen. 81:227−237. DOI:10.1016/0926-860X(92)80095-T [100] Chin Y.-H., Buda C., Neurock M., et al. (2013). Consequences of metal–oxide interconversion for C–H bond activation during CH4 reactions on Pd catalysts. J. Am. Chem. Soc. 135:15425−15442. DOI:10.1021/ja405004m [101] Yang S., Maroto-Valiente A., Benito-Gonzalez M., et al. (2000). Methane combustion over supported palladium catalysts: I. Reactivity and active phase. Appl. Catal. B-Environ. 28:223−233. DOI:10.1016/S0926-3373(00)00178-8 [102] Kinnunen N. M., Hirvi J. T., Suvanto M., et al. (2011). Role of the interface between Pd and PdO in methane dissociation. J. Phys. Chem. C 115:19197−19202. DOI:10.1021/jp204360c [103] Bunting R. J., Cheng X., Thompson J., et al. (2019). Amorphous surface PdOX and its activity toward methane combustion. ACS Catal. 9:10317−10323. DOI:10.1021/acscatal.9b01942 [104] Wang J. and Wang G.-C. (2022). Dynamic evolution of methane oxidation on Pd-based catalysts: A reactive force field molecular dynamics study. J. Phys. Chem. C 126:14201−14210. DOI:10.1021/acs.jpcc.2c04841 [105] Chen S., Li S., You R., et al. (2021). Elucidation of active sites for CH4 catalytic oxidation over Pd/CeO2 via tailoring metal–support interactions. ACS Catal. 11:5666−5677. DOI:10.1021/acscatal.1c00839 [106] Lott P., Dolcet P., Casapu M., et al. (2019). The effect of prereduction on the performance of Pd/Al2O3 and Pd/CeO2 catalysts during methane oxidation. Ind. Eng. Chem. Res. 58:12561−12570. DOI:10.1021/acs.iecr.9b01267 [107] Senftle T. P., van Duin A. C. T. and Janik M. J. (2017). Methane activation at the Pd/CeO2 interface. ACS Catal. 7:327−332. DOI:10.1021/acscatal.6b02447 [108] Meng L., Lin J.-J., Pu Z.-Y., et al. (2012). Identification of active sites for CO and CH4 oxidation over PdO/Ce1−xPdxO2−δ catalysts. Appl. Catal. B-Environ. 119-120:117−122. DOI:10.1016/j.apcatb.2012.02.036 [109] Eyssler A., Mandaliev P., Winkler A., et al. (2010). The effect of the state of Pd on methane combustion in Pd-doped LaFeO3. J. Phys. Chem. C 114:4584−4594. DOI:10.1021/jp911052s [110] Colussi S., Gayen A., Farnesi Camellone M., et al. (2009). Nanofaceted Pd-O sites in Pd-Ce surface superstructures: Enhanced activity in catalytic combustion of methane. Angew. Chem. Int. Edit. 48:8481−8484. DOI:10.1002/anie.200903581 [111] Castellazzi P., Groppi G., Forzatti P., et al. (2010). Role of Pd loading and dispersion on redox behaviour and CH4 combustion activity of Al2O3 supported catalysts. Catal. Today 155:18−26. DOI:10.1016/j.cattod.2009.02.029 [112] Ercolino G., Grzybek G., Stelmachowski P., et al. (2015). Pd/Co3O4-based catalysts prepared by solution combustion synthesis for residual methane oxidation in lean conditions. Catal. Today 257:66−71. DOI:10.1016/j.cattod.2015.03.006 [113] Velin P., Florén C.-R., Skoglundh M., et al. (2020). Palladium dispersion effects on wet methane oxidation kinetics. Catal. Sci. Technol. 1:546−5469. DOI:10.1039/d0cy00734j [114] Wang W., Zhou W., Li W., et al. (2020). In-situ confinement of ultrasmall palladium nanoparticles in silicalite-1 for methane combustion with excellent activity and hydrothermal stability. Appl. Catal. B-Environ. 276:119142. DOI:10.1016/j.apcatb.2020.119142 [115] Fertal D. R., Monai M., Proaño L., et al. (2021). Calcination temperature effects on Pd/alumina catalysts: Particle size, surface species and activity in methane combustion. Catal. Today 382:120−129. DOI:10.1016/j.cattod.2021.08.005 [116] Oh D. G., Lee J., Kim E., et al. (2021). Pd/SiO2 as an active and durable CH4 oxidation catalyst for vehicle applications. J. Ind. Eng. Chem. 99:90−97. DOI:10.1016/j.jiec.2021.04.012 [117] Wu M., Li W., Zhang X., et al. (2021). Elucidation of the active phase in Pd‐based catalysts supporting on octahedral CeO2 for low‐temperature methane oxidation. ChemistrySelect 6:4149−4159. DOI:10.1002/slct.202100511 [118] Xiong J. X., Wu K., Yang J., et al. (2021). The effect of existence states of PdOx supported by Co3O4 nanoplatelets on catalytic oxidation of methane. Appl. Surf. Sci. 539:148211. DOI:10.1016/j.apsusc.2020.148211 [119] Park J.-H., Cho J. H., Kim Y. J., et al. (2014). Hydrothermal stability of Pd/ZrO2 catalysts for high temperature methane combustion. Appl. Catal. B-Environ. 160-161:135−143. DOI:10.1016/j.apcatb.2014.05.013 [120] Dai Y., Wang H., Liu S., et al. (2020). PdO nanoparticles supported on MnO2 nanowire aerogels as catalysts for low-temperature methane combustion. ACS Appl. Nano Mater. 3:6972−6978. DOI:10.1021/acsanm.0c01286 [121] Barrett W., Shen J., Hu Y., et al. (2020). Understanding the role of SnO2 support in water-tolerant methane combustion: In situ observation of Pd(OH)2 and comparison with Pd/Al2O3. ChemCatChem 12:944−952. DOI:10.1002/cctc.201901744 [122] Zanoletti M., Godard F. and Perrier M. (2020). Effect of support on the apparent activity of palladium oxide in catalytic methane combustion. Can. J. Chem. Eng. 98:2205−2213. DOI:10.1002/cjce.23734 [123] Li C., Tang S., Tang B., et al. (2022). The effects of alkali metal ions on the physiochemical and catalytic properties of Pd/NiAlOx catalysts for lean methane oxidation. Mol. Catal. 530:112614. DOI:10.1016/j.mcat.2022.112614 [124] Hong E., Jeon S.-A., Lee S.-S., et al. (2018). Methane combustion over Pd/Ni-Al oxide catalysts: Effect of Ni/Al ratio in the Ni-Al oxide support. Korean J. Chem. Eng. 35:1815−1822. DOI:10.1007/s11814-018-0090-0 [125] Satsuma A., Tojo T., Okuda K., et al. (2015). Effect of preparation method of Co-promoted Pd/alumina for methane combustion. Catal. Today 242:308−314. DOI:10.1016/j.cattod.2014.05.046 [126] Yu X., Genz N. S., Mendes R. G., et al. (2024). Anchoring PdOx clusters on defective alumina for improved catalytic methane oxidation. Nat. Commun. 15:6494. DOI:10.1038/s41467-024-50216-0 [127] Kwak J. H., Hu J., Mei D., et al. (2009). Coordinatively unsaturated Al3+ centers as binding sites for active catalyst phases of platinum on γ-Al2O3. Science 325:1670−1673. DOI:10.1126/science.1176745 [128] Barrett W., Nasr S., Shen J., et al. (2020). Strong metal–support interactions in Pd/Co3O4 catalyst in wet methane combustion: in situ X-ray absorption study. Catal. Sci. Technol. 10:4229−4236. DOI:10.1039/d0cy00465k [129] Wu Y., Chen J., Hu W., et al. (2019). Phase transformation and oxygen vacancies in Pd/ZrO2 for complete methane oxidation under lean conditions. J. Catal. 377:565−576. DOI:10.1016/j.jcat.2019.04.047 [130] Zhao Z., Wang B., Ma J., et al. (2017). Catalytic combustion of methane over Pd/SnO2 catalysts. Chinese J. Catal. 38:1322−1329. DOI:10.1016/S1872-2067(17)62864-X [131] Tang M., Li S., Chen S., et al. (2021). Facet‐dependent oxidative strong metal‐support interactions of palladium–TiO2 determined by in situ transmission electron microscopy. Angew. Chem. Int. Edit. 60:22339−22344. DOI:10.1002/anie.202106805 [132] Guo T., Nie X., Du J., et al. (2019). 2D feather-shaped alumina slice as efficient Pd catalyst support for oxidation reaction of the low-concentration methane. Chem. Eng. J. 361:1345−1351. DOI:10.1016/j.cej.2018.12.177 [133] Lei Y., Li W., Liu Q., et al. (2018). Typical crystal face effects of different morphology ceria on the activity of Pd/CeO2 catalysts for lean methane combustion. Fuel 233:10−20. DOI:10.1016/j.fuel.2018.06.035 [134] Park J.-H., Ahn J.-H., Sim H.-I., et al. (2014). Low-temperature combustion of methane using PdO/Al2O3 catalyst: Influence of crystalline phase of Al2O3 support. Catal. Commun. 56:157−163. DOI:10.1016/j.catcom.2014.07.022 [135] Willis J. J., Gallo A., Sokaras D., et al. (2017). Systematic structure–property relationship studies in palladium-catalyzed methane complete combustion. ACS Catal. 7:7810−7821. DOI:10.1021/acscatal.7b02414 [136] Yoshida H., Nakajima T., Yazawa Y., et al. (2007). Support effect on methane combustion over palladium catalysts. Appl. Catal. B-Environ. 71:70−79. DOI:10.1016/j.apcatb.2006.08.010 [137] Kepiński L., Wołcyrz M. and Okal J. (1995). Effect of chlorine on microstructure and activity of Pd/CeO2 catalysts. J. Chem. Soc., Faraday Trans. 91:507−515. DOI:10.1039/FT9959100507 [138] Lin J., Huang J., Chen X., et al. (2024). Key factors for methane combustion over palladium-based catalysts revealed by enhanced and depressed catalytic performance. Appl. Catal. B-Environ. 340:123283. DOI:10.1016/j.apcatb.2023.123283 [139] Mortensen R. L., Noack H. D., Pedersen K., et al. (2022). Recent advances in complete methane oxidation using zeolite‐supported metal nanoparticle catalysts. ChemCatChem 14:e202101924. DOI:10.1002/cctc.202101924 [140] Lou Y., Ma J., Hu W., et al. (2016). Low-temperature methane combustion over Pd/H-ZSM-5: Active Pd sites with specific electronic properties modulated by acidic sites of H-ZSM-5. ACS Catal. 6:8127−8139. DOI:10.1021/acscatal.6b01801 [141] Ryu S.-H., Kim S., Lee H., et al. (2024). Robust palladium oxide nano-cluster catalysts using atomic ions and strong interactions for high-performance methane oxidation. Nat. Commun. 15:8348. DOI:10.1038/s41467-024-52698-4 [142] Chen H.-Y., Lu J., Fedeyko J. M., et al. (2022). Zeolite supported Pd catalysts for the complete oxidation of methane: A critical review. Appl. Catal. A-Gen. 633:118534. DOI:10.1016/j.apcata.2022.118534 [143] Dai Q., Zhu Q., Lou Y., et al. (2018). Role of Brønsted acid site during catalytic combustion of methane over PdO/ZSM-5: Dominant or negligible. J. Catal. 357:29−40. DOI:10.1016/j.jcat.2017.09.022 [144] Lim J. B., Jo D. and Hong S. B. (2017). Palladium-exchanged small-pore zeolites with different cage systems as methane combustion catalysts. Appl. Catal. B-Environ. 219:155−162. DOI:10.1016/j.apcatb.2017.07.032 [145] Fan C., Yang L., Luo L., et al. (2020). A highly active Pd/H-ZSM-5 catalyst in lean methane combustion prepared via a sol–gel method and treated by reduction–oxidation. New J. Chem. 44:3940−3949. DOI:10.1039/D0NJ00212G [146] Chen J., Giewont K., Walker E. A., et al. (2021). Cobalt-Induced PdO formation in low-loading Pd/BEA catalysts for CH4 oxidation. ACS Catal. 11:13066−13076. DOI:10.1021/acscatal.1c00400 [147] Tang X., Lou Y., Zhao R., et al. (2021). Confinement of subnanometric PdCo bimetallic oxide clusters in zeolites for methane complete oxidation. Chem. Eng. J. 418:129398. DOI:10.1016/j.cej.2021.129398 [148] Luo L., Wang S., Fan C., et al. (2020). Promoting effect of alkali metal cations on the catalytic performance of Pd/H-ZSM-5 in the combustion of lean methane. Appl. Catal. A-Gen. 602:117678. DOI:10.1016/j.apcata.2020.117678 [149] Farrusseng D. and Tuel A. (2016). Perspectives on zeolite-encapsulated metal nanoparticles and their applications in catalysis. New J. Chem. 4:3933−3949. DOI:10.1039/c5nj02608c [150] Setiawan A., Friggieri J., Hosseiniamoli H., et al. (2016). Towards understanding the improved stability of palladium supported on TS-1 for catalytic combustion. Phys. Chem. Chem. Phys. 18:10528−10537. DOI:10.1039/c6cp00319b [151] Limlamthong M., Tesana S. and Yip A. C. K. (2020). Metal encapsulation in zeolite particles: A rational design of zeolite-supported catalyst with maximum site activity. Adv. Powder Technol. 31:1274−1279. DOI:10.1016/j.apt.2020.01.006 [152] Khivantsev K., Jaegers N. R., Kovarik L., et al. (2021). The superior hydrothermal stability of Pd/SSZ-39 in low temperature passive NOx adsorption (PNA) and methane combustion. Appl. Catal. B-Environ. 280:119449. DOI:10.1016/j.apcatb.2020.119449 [153] Cui Y., Zhu Chen J., Peng B., et al. (2021). Onset of high methane combustion rates over supported palladium catalysts: From isolated Pd cations to PdO nanoparticles. JACS Au 1:396−408. DOI:10.1021/jacsau.0c00109 [154] Nguyen T. S., McKeever P., Arredondo-Arechavala M., et al. (2020). Correlation of the ratio of metallic to oxide species with activity of PdPt catalysts for methane oxidation. Catal. Sci. Technol. 1:148−1421. DOI:10.1039/c9cy02371b [155] Osman A. I., Abu-Dahrieh J. K., Laffir F., et al. (2016). A bimetallic catalyst on a dual component support for low temperature total methane oxidation. Appl. Catal. B-Environ. 187:408−418. DOI:10.1016/j.apcatb.2016.01.017 [156] Venezia A. M., Di Carlo G., Liotta L. F., et al. (2011). Effect of Ti(IV) loading on CH4 oxidation activity and SO2 tolerance of Pd catalysts supported on silica SBA-15 and HMS. Appl. Catal. B-Environ. 106:529−539. DOI:10.1016/j.apcatb.2011.06.013 [157] Yin F., Ji S., Wu P., et al. (2008). Deactivation behavior of Pd-based SBA-15 mesoporous silica catalysts for the catalytic combustion of methane. J. Catal. 257:108−116. DOI:10.1016/j.jcat.2008.04.010 [158] Fan J. X., Du H. X., Zhao Y., et al. (2020). Recent progress on rational design of bimetallic Pd based catalysts and their advanced catalysis. ACS Catal. 10:13560−13583. DOI:10.1021/acscatal.0c03280 [159] Norskov J. K., Bligaard T., Rossmeisl J., et al. (2009). Towards the computational design of solid catalysts. Nat. Chem. 1:37−46. DOI:10.1038/nchem.121 [160] Li H., Shin K. and Henkelman G. (2018). Effects of ensembles, ligand, and strain on adsorbate binding to alloy surfaces. J. Chem. Phys. 149:174705. DOI:10.1063/1.5053894 [161] Ro I., Resasco J. and Christopher P. (2018). Approaches for understanding and controlling interfacial effects in oxide-supported metal catalysts. ACS Catal. 8:7368−7387. DOI:10.1021/acscatal.8b02071 [162] Porter S., Ghosh A., Liu C. H., et al. (2023). Biphasic janus particles explain self-healing in Pt–Pd diesel oxidation catalysts. ACS Catal. 13:5456−5471. DOI:10.1021/acscatal.3c00360 [163] Goodman E. D., Dai S., Yang A. C., et al. (2017). Uniform Pt/Pd bimetallic nanocrystals demonstrate platinum effect on palladium methane combustion activity and stability. ACS Catal. 7:4372−4380. DOI:10.1021/acscatal.7b00393 [164] Kinnunen N. M., Hirvi J. T., Suvanto M., et al. (2012). Methane combustion activity of Pd-PdOx-Pt/Al2O3 catalyst: The role of platinum promoter. J. Mol. Catal. A-Chem. 356:20−28. DOI:10.1016/j.molcata.2011.12.023 [165] Maione A., André F. and Ruiz P. (2007). Structured bimetallic Pd-Pt/γ-Al2O3 catalysts on FeCrAlloy fibers for total combustion of methane. Appl. Catal. B-Environ. 75:59−70. DOI:10.1016/j.apcatb.2007.03.011 [166] Maione A., André F. and Ruiz P. (2007). The effect of Rh addition on Pd/γ-Al2O3 catalysts deposited on FeCrAlloy fibers for total combustion of methane. Appl. Catal. A-Gen. 333:1−10. DOI:10.1016/j.apcata.2007.08.037 [167] Zhao X. T., Liu Y. X., Deng J. G., et al. (2017). Mesoporous PdxPt alloys: High-performance catalysts for methane combustion. Mol. Catal. 442:191−201. DOI:10.1016/j.mcat.2017.09.002 [168] Nie H. Y., Howe J. Y., Lachkov P. T., et al. (2019). Chemical and structural dynamics of nanostructures in bimetallic Pt-Pd catalysts, their inhomogeneity, and their roles in methane oxidation. ACS Catal. 9:5445−5461. DOI:10.1021/acscatal.9b00485 [169] Kul Ryu C., Wong Ryoo M., Soo Ryu I., et al. (1999). Catalytic combustion of methane over supported bimetallic Pd catalysts: Effects of Ru or Rh addition. Catal. Today 47:141−147. DOI:10.1016/S0920-5861(98)00293-4 [170] Narui K., Yata H., Furuta K., et al. (1999). Effects of addition of Pt to PdO/Al2O3 catalyst on catalytic activity for methane combustion and TEM observations of supported particles. Appl. Catal. A-Gen. 179:165−173. DOI:10.1016/S0926-860X(98)00306-8 [171] Wang Y., Arandiyan H., Scott J., et al. (2016). High performance Au-Pd supported on 3D hybrid strontium-substituted lanthanum manganite perovskite catalyst for methane combustion. ACS Catal. 6:6935−6947. DOI:10.1021/acscatal.6b01685 [172] Guo X., Brault P., Zhi G., et al. (2011). Synergistic combination of plasma sputtered Pd–Au bimetallic nanoparticles for catalytic methane combustion. J. Phys. Chem. C 115:11240−11246. DOI:10.1021/jp203351p [173] Persson K., Ersson A., Jansson K., et al. (2005). Influence of co-metals on bimetallic palladium catalysts for methane combustion. J. Catal. 231:139−150. DOI:10.1016/j.jcat.2005.01.001 [174] Yang Y., Lee J., Dorakhan R., et al. (2022). Active site structure and methane oxidation reactivity of bimetallic Pd and Pt nanoparticles. Appl. Catal. A-Gen. 629:118290. DOI:10.1016/j.apcata.2021.118290 [175] Lee G., Zheng W., Goulas K. A., et al. (2019). 110th anniversary: Kinetics and X-ray absorption spectroscopy in methane total oxidation over alumina-supported Pt, Pd, and Ag–Pd catalysts. Ind. Eng. Chem. Res. 58:17718−17726. DOI:10.1021/acs.iecr.9b03094 [176] Li Y.-N., Xie Y.-B. and Liu C.-J. (2008). Enhanced activity of bimetallic Pd-based catalysts for methane combustion. Catal. Lett. 125:130−133. DOI:10.1007/s10562-008-9528-z [177] Hou M., Zhang X., Fu C., et al. (2020). Effects of a Pd/Pt bimetal supported by a γ-Al2O3 surface on methane activation. Phys. Chem. Chem. Phys. 22:4692−4698. DOI:10.1039/c9cp05920b [178] Nassiri H., Hayes R. E. and Semagina N. (2018). Stability of Pd-Pt catalysts in low-temperature wet methane combustion: Metal ratio and particle reconstruction. Chem. Eng. Sci. 186:44−51. DOI:10.1016/j.ces.2018.04.028 [179] Geng H., Zhang L., Yang Z., et al. (2018). Effect of Pd/Pt ratio on the reactivity of methane catalytic combustion in bimetallic Pd-Pt catalyst. Int. J. Hydrog. Energy 43:11069−11078. DOI:10.1016/j.ijhydene.2018.05.029 [180] Lin J., Chen Y. L., Liu X. J., et al. (2020). Microstructural property regulation and performance in methane combustion reaction of ordered mesoporous alumina supported palladium-cobalt bimetallic catalysts. Appl. Catal. B-Environ. 263:118269. DOI:10.1016/j.apcatb.2019.118269 [181] Nunotani N., Moriyama N., Matsuo K., et al. (2017). Novel catalysts for methane combustion based on cobalt-doped lanthanum silicates having an apatite-type structure. ACS Appl. Mater. Interfaces 9:40344−40350. DOI:10.1021/acsami.7b14069 [182] Wang B., Qin Z., Wang G., et al. (2013). Catalytic combustion of lean methane at low temperature over palladium on a CoOx–SiO2 composite support. Catal. Lett. 143:411−417. DOI:10.1007/s10562-013-0988-4 [183] Hong E., Kim C., Lim D.-H., et al. (2018). Catalytic methane combustion over Pd/ZrO2 catalysts: Effects of crystalline structure and textural properties. Appl. Catal. B-Environ. 232:544−552. DOI:10.1016/j.apcatb.2018.03.101 [184] Liu P., Zhao Y., Qin R., et al. (2018). A vicinal effect for promoting catalysis of Pd1/TiO2: supports of atomically dispersed catalysts play more roles than simply serving as ligands. Sci. Bull. 63:675−682. DOI:10.1016/j.scib.2018.03.002 [185] Wang X., Liu Y., Zhang Y., et al. (2018). Structural requirements of manganese oxides for methane oxidation: XAS spectroscopy and transition-state studies. Appl. Catal. B-Environ. 229:52−62. DOI:10.1016/j.apcatb.2018.02.007 [186] Yue B., Zhou R., Wang Y., et al. (2006). Influence of transition metals (Cr, Mn, Fe, Co and Ni) on the methane combustion over Pd/Ce–Zr/Al2O3 catalyst. Appl. Surf. Sci. 252:5820−5828. DOI:10.1016/j.apsusc.2005.07.043 [187] Li C., Li W., Chen K., et al. (2020). Palladium nanoparticles supported on surface-modified metal oxides for catalytic oxidation of lean methane. ACS Appl. Nano Mater. 3:12130−12138. DOI:10.1021/acsanm.0c02614 [188] Mahara Y., Tojo T., Murata K., et al. (2017). Methane combustion over Pd/CoAl2O4/Al2O3 catalysts prepared by galvanic deposition. RSC Adv. 7:34530−34537. DOI:10.1039/C7RA06150A [189] Pan X., Zhang Y., Miao Z., et al. (2013). A novel PdNi/Al2O3 catalyst prepared by galvanic deposition for low temperature methane combustion. J. Energy Chem. 22:610−616. DOI:10.1016/S2095-4956(13)60080-7 [190] Liotta L. F. and Deganello G. (2003). Thermal stability, structural properties and catalytic activity of Pd catalysts supported on Al2O3–CeO2–BaO mixed oxides prepared by sol–gel method. J. Mol. Catal. A-Chem. 204-205:763−770. DOI:10.1016/S1381-1169(03)00362-5 [191] Klingstedt F., Karhu H., Neyestanaki A. K., et al. (2002). Barium promoted palladium catalysts for the emission control of natural gas driven vehicles and biofuel combustion systems. J. Catal. 206:248−262. DOI:10.1006/jcat.2001.3505 [192] Du J., Guo M., Zhang A., et al. (2022). Performance, structure and kinetics of Pd catalyst supported in Ba modified γ-Al2O3 for low temperature wet methane oxidation. Chem. Eng. J. 430:133113. DOI:10.1016/j.cej.2021.133113 [193] Auvray X., Lindholm A., Milh M., et al. (2018). The addition of alkali and alkaline earth metals to Pd/Al2O3 to promote methane combustion. Effect of Pd and Ca loading. Catal. Today 299:212−218. DOI:10.1016/j.cattod.2017.05.066 [194] Cargnello M., Jaén J. D., Garrido J. H., et al. (2012). Exceptional activity for methane combustion over modular Pd@CeO2 subunits on functionalized Al2O3. Science 337:713−717. DOI:10.1126/science.1222887 [195] Lee J., Lim T. H., Lee E., et al. (2021). Promoting the methane oxidation on Pd/CeO2 catalyst by increasing the surface oxygen mobility via defect engineering. ChemCatChem 13:3706−3712. DOI:10.1002/cctc.202100653 [196] Peng H. G., Rao C., Zhang N., et al. (2018). Confined ultrathin Pd-Ce nanowires with outstanding moisture and SO2 tolerance in methane combustion. Angew. Chem. Int. Edit. 57:8953−8957. DOI:10.1002/anie.201803393 [197] Nilsson J., Carlsson P. A., Fouladvand S., et al. (2015). Chemistry of supported palladium nanoparticles during methane oxidation. ACS Catal. 5:2481−2489. DOI:10.1021/cs502036d [198] Shi C., Yang L. and Cai J. (2007). Cerium promoted Pd/HZSM-5 catalyst for methane combustion. Fuel 86:106−112. DOI:10.1016/j.fuel.2006.05.029 [199] Ballauri S., Sartoretti E., Hu M., et al. (2023). Praseodymium doping in ceria-supported palladium nanocatalysts as an effective strategy to minimize the inhibiting effects of water during methane oxidation. Appl. Catal. B-Environ. 320:121898. DOI:10.1016/j.apcatb.2022.121898 [200] Ma J., Lou Y., Cai Y. F., et al. (2018). The relationship between the chemical state of Pd species and the catalytic activity for methane combustion on Pd/CeO2. Catal. Sci. Technol. 8:2567−2577. DOI:10.1039/c8cy00208h [201] Mkhwanazi T. P. O., Farahani M. D., Mahomed A. S., et al. (2020). Engineering of catalytic sites of Pdx-Ce1-xO2-δ for dehydrogenation, oxygen insertion and reverse water gas shift reactions during methane combustion. Appl. Catal. B-Environ. 275:119118. DOI:10.1016/j.apcatb.2020.119118 [202] Danielis M., Colussi S., de Leitenburg C., et al. (2019). The effect of milling parameters on the mechanochemical synthesis of Pd–CeO2 methane oxidation catalysts. Catal. Sci. Technol. 9:4232−4238. DOI:10.1039/c9cy01098j [203] Yang X., Du C., Guo Y., et al. (2019). Al2O3 supported hybrid PdCeO2 colloidal spheres and its enhanced catalytic performances for methane combustion. J. Rare Earths 37:714−719. DOI:10.1016/j.jre.2018.10.005 [204] Cai G., Luo W., Xiao Y., et al. (2018). Synthesis of a highly stable Pd@CeO2 catalyst for methane combustion with the synergistic effect of urea and citric acid. ACS Omega 3:16769−16776. DOI:10.1021/acsomega.8b02556 [205] Krcha M. D., Mayernick A. D. and Janik M. J. (2012). Periodic trends of oxygen vacancy formation and C–H bond activation over transition metal-doped CeO2 (111) surfaces. J. Catal. 293:103−115. DOI:10.1016/j.jcat.2012.06.010 [206] Xie Y., Zhang L., Jiang Y., et al. (2021). Enhanced catalytic performance of methane combustion over zeolite-supported Pd catalysts with the lanthanum. Catal. Today 364:16−20. DOI:10.1016/j.cattod.2019.11.030 [207] Danielis M., Colussi S., de Leitenburg C., et al. (2018). Outstanding methane oxidation performance of palladium-embedded ceria catalysts prepared by a one-step dry ball-milling method. Angew. Chem. Int. Edit. 57:10212−10216. DOI:10.1002/anie.201805929 [208] Onn T. M., Zhang S., Arroyo-Ramirez L., et al. (2015). Improved thermal stability and methane-oxidation activity of Pd/Al2O3 catalysts by atomic layer deposition of ZrO2. ACS Catal. 5:5696−5701. DOI:10.1021/acscatal.5b01348 [209] Wang D. S. and Li Y. D. (2011). Bimetallic nanocrystals: Liquid-phase synthesis and catalytic applications. Adv. Mater. 23:1044−1060. DOI:10.1002/adma.201003695 [210] Zhao X., Chen T., Wang Y., et al. (2023). Effect of electric field and water on Pd-based catalyst for complete oxidation of methane: Study on promotion and deactivation. Chem. Eng. J. 457:141126. DOI:10.1016/j.cej.2022.141126 [211] Persson K., Jansson K. and Järås S. G. (2007). Characterisation and microstructure of Pd and bimetallic Pd-Pt catalysts during methane oxidation. J. Catal. 245:401−414. DOI:10.1016/j.jcat.2006.10.029 [212] Mehrabadi B. A. T., Eskandari S., Khan U., et al. (2017). A review of preparation methods for supported metal catalysts. Adv. Catal. 61:1−35. DOI:10.1016/bs.acat.2017.10.001 [213] Galhenage R. P., Xie K., Diao W. J., et al. (2015). Platinum-ruthenium bimetallic clusters on graphite: a comparison of vapor deposition and electroless deposition methods. Phys. Chem. Chem. Phys. 17:28354−28363. DOI:10.1039/c5cp00075k [214] Zhu Z. Z., Lu G. Z., Guo Y., et al. (2012). Influences of Pd precursors and preparation method on the catalytic performances of Pd-only close-coupled catalysts. J. Ind. Eng. Chem. 18:2135−2140. DOI:10.1016/j.jiec.2012.06.008 [215] Quiros I., Yamada M., Kubo K., et al. (2002). Preparation of alkanethiolate-protected palladium nanoparticles and their size dependence on synthetic conditions. Langmuir 18:1413−1418. DOI:10.1021/la0114023 [216] Qu P. F., Hu W., Wu Y., et al. (2019). Pd-based catalysts by colloid synthesis using different reducing reagents for complete oxidation of methane. Catal. Lett. 149:2098−2103. DOI:10.1007/s10562-019-02754-2 [217] Agarwal N., Freakley S. J., McVicker R. U., et al. (2017). Aqueous Au-Pd colloids catalyze selective CH4 oxidation to CH3OH with O2 under mild conditions. Science 358:223−227. DOI:10.1126/science.aan6515 [218] Zhang N., Liu S., Fu X., et al. (2011). A simple strategy for fabrication of “Plum-Pudding” type Pd@CeO2 semiconductor nanocomposite as a visible-light-driven photocatalyst for selective oxidation. J. Phys. Chem. C 115:22901−22909. DOI:10.1021/jp205821b [219] Brunelle J. P. (1978). Preparation of catalysts by metallic complex adsorption on mineral oxides. Pure Appl. Chem. 50:1211−1229. DOI:10.1351/pac197850091211 [220] Zhang L. Y., Wen G. D., Liu H. Y., et al. (2014). Preparation of palladium catalysts supported on carbon nanotubes by an electrostatic adsorption method. ChemCatChem 6:2600−2606. DOI:10.1002/cctc.201402175 [221] Cho H. R. and Regalbuto J. R. (2015). The rational synthesis of Pt-Pd bimetallic catalysts by electrostatic adsorption. Catal. Today 246:143−153. DOI:10.1016/j.cattod.2014.09.029 [222] Wang X., Liu D. P., Li J. Q., et al. (2015). γ-Al2O3 supported Pd@CeO2 core@shell nanospheres: salting-out assisted growth and self-assembly, and their catalytic performance in CO oxidation. Chem. Sci. 6:2877−2884. DOI:10.1039/c4sc03854a [223] Carrillo C., Johns T. R., Xiong H. F., et al. (2014). Trapping of mobile Pt species by PdO nanoparticles under oxidizing conditions. J. Phys. Chem. Lett. 5:2089−2093. DOI:10.1021/jz5009483 [224] Duan H. M., You R., Xu S. T., et al. (2019). Pentacoordinated Al3+-stabilized active Pd structures on Al2O3-coated palladium catalysts for methane combustion. Angew. Chem. Int. Edit. 58:12043−12048. DOI:10.1002/anie.201904883 [225] Sun L., Yuan G., Gao L., et al. (2021). Chemical vapour deposition. Nat. Rev. Method. Primer. 1:5. DOI:10.1038/s43586-020-00005-y [226] Shaw D., Kulczyk-Malecka J., Kelly P. J., et al. (2021). Methane oxidation over supported Pd catalysts prepared by magnetron sputtering. Surf. Coat. Tech. 414 . 127123. DOI:10.1016/j.surfcoat.2021.127123. [227] Douglin J. C., Zamora Zeledón J. A., Kreider M. E., et al. (2023). High-performance ionomerless cathode anion-exchange membrane fuel cells with ultra-low-loading Ag‒Pd alloy electrocatalysts. Nat. Energy 8:1262−1272. DOI:10.1038/s41560-023-01385-7 [228] Xue L., Luo G., Yang X., et al. (2024). Vapor-phase methods for synthesizing metal-organic framework thin films. Innov. Mater. 2 . DOI:10.59717/j.xinn-mater.2024.100047. [229] Chen C., Yeh Y.-H., Cargnello M., et al. (2014). Methane oxidation on Pd@ZrO2/Si–Al2O3 is enhanced by surface reduction of ZrO2. ACS Catal. 4:3902−3909. DOI:10.1021/cs501146u [230] Zou X., Rui Z. and Ji H. (2017). Core–shell NiO@PdO nanoparticles supported on alumina as an advanced catalyst for methane oxidation. ACS Catal. 7:1615−1625. DOI:10.1021/acscatal.6b03105 [231] Goodman E. D., Johnston-Peck A. C., Dietze E. M., et al. (2019). Catalyst deactivation via decomposition into single atoms and the role of metal loading. Nat. Catal. 2:748−755. DOI:10.1038/s41929-019-0328-1 [232] Monai M., Montini T., Gorte R. J., et al. (2018). Catalytic oxidation of methane: Pd and beyond. Eur. J. Inorg. Chem. 2018:2884−2893. DOI:10.1002/ejic.201800326 [233] Goodman E. D., Schwalbe J. A. and Cargnello M. (2017). Mechanistic understanding and the rational design of sinter-resistant heterogeneous catalysts. ACS Catal. 7:7156−7173. DOI:10.1021/acscatal.7b01975 [234] Campbell C. T. (2013). The energetics of supported metal nanoparticles: Relationships to sintering rates and catalytic activity. Acc. Chem. Res. 46:1712−1719. DOI:10.1021/ar3003514 [235] Yang X. W., Li Q., Lu E. J., et al. (2019). Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports. Nat. Commun. 10:1611. DOI:10.1038/s41467-019-09662-4 [236] De Rogatis L., Cargnello M., Gombac V., et al. (2010). Embedded phases: A way to active and stable catalysts. ChemSusChem 3:24−42. DOI:10.1002/cssc.200900151 [237] Colussi S., Fornasiero P. and Trovarelli A. (2020). Structure-activity relationship in Pd/CeO2 methane oxidation catalysts. Chinese J. Catal. 41:938−950. DOI:10.1016/S1872-2067(19)63510-2 [238] Cao Y., Ran R., Wu X., et al. (2023). Progress on metal-support interactions in Pd-based catalysts for automobile emission control. J. Environ. Sci. 125:401−426. DOI:10.1016/j.jes.2022.01.011 [239] Zou X., Rui Z., Song S., et al. (2016). Enhanced methane combustion performance over NiAl2O4-interface-promoted Pd/γ-Al2O3. J. Catal. 338:192−201. DOI:10.1016/j.jcat.2015.12.031 [240] Mejía-Rosales S. J., Fernández-Navarro C., Pérez-Tijerina E., et al. (2006). Two-stage melting of Au−Pd nanoparticles. J. Phys. Chem. B 110:12884−12889. DOI:10.1021/jp0614704 [241] Lu N., Wang J., Xie S., et al. (2013). Enhanced shape stability of Pd–Rh core–frame nanocubes at elevated temperature: in situ heating transmission electron microscopy. Chem. Commun. 49:11806−11808. DOI:10.1039/c3cc46465b [242] Cargnello M., Wieder N. L., Montini T., et al. (2010). Synthesis of dispersible Pd@CeO2 core−shell nanostructures by self-assembly. J. Am. Chem. Soc. 132:1402−1409. DOI:10.1021/ja909131k [243] Onn T. M., Arroyo-Ramirez L., Monai M., et al. (2016). Modification of Pd/CeO2 catalyst by atomic layer deposition of ZrO2. Appl. Catal. B-Environ. 197:280−285. DOI:10.1016/j.apcatb.2015.12.028 [244] Petrov A. W., Ferri D., Kröcher O., et al. (2019). Design of stable palladium-based zeolite catalysts for complete methane oxidation by postsynthesis zeolite modification. ACS Catal. 9:2303−2312. DOI:10.1021/acscatal.8b04486 [245] Li L. C., Zhang N. Q., Huang X., et al. (2018). Hydrothermal stability of core-shell Pd@Ce0.5Zr0.5O2/Al2O3 catalyst for automobile three-way reaction. ACS Catal. 8 :3222-3231. DOI:10.1021/acscatal.8b00358. [246] Tan L., Ganghua X. and Liu Z. (2024). Thermally stable Pd/CeO2@SiO2 with a core–shell structure for catalytic lean methane combustion. Nanoscale 16:6720−6728. DOI:10.1039/d3nr06620g [247] Li T., Beck A., Krumeich F., et al. (2021). Stable palladium oxide clusters encapsulated in silicalite-1 for complete methane oxidation. ACS Catal. 11:7371−7382. DOI:10.1021/acscatal.0c04868 [248] Campbell C. T., Parker S. C. and Starr D. E. (2002). The effect of size-dependent nanoparticle energetics on catalyst sintering. Science 298:811−814. DOI:10.1126/science.1075094 [249] Schwartz W. R. and Pfefferle L. D. (2012). Combustion of methane over palladium-based catalysts: Support interactions. J. Phys. Chem. C 116:8571−8578. DOI:10.1021/jp2119668 [250] Ciuparu D., Bozon-Verduraz F. and Pfefferle L. (2002). Oxygen exchange between palladium and oxide supports in combustion catalysts. J. Phys. Chem. B 106:3434−3442. DOI:10.1021/jp013577r [251] Ciuparu D. and Pfefferle L. (2002). Contributions of lattice oxygen to the overall oxygen balance during methane combustion over PdO-based catalysts. Catal. Today 77:167−179. DOI:10.1016/S0920-5861(02)00243-2 [252] Descorme C. and Duprez D. (2000). Oxygen surface mobility and isotopic exchange on oxides: Role of the nature and the structure of metal particles. Appl. Catal. A-Gen. 202:231−241. DOI:10.1016/S0926-860X(00)00537-8 [253] Huang W., Johnston-Peck A. C., Wolter T., et al. (2021). Steam-created grain boundaries for methane C-H activation in palladium catalysts. Science 373:1518−1523. DOI:10.1126/science.abj5291 [254] Cullis C. F., Nevell T. G. and Trimm D. L. (1972). Role of the catalyst support in the oxidation of methane over palladium. J. Chem. Soc., Faraday Trans. 1. 68 :1406-1412. DOI:10.1039/f19726801406. [255] Burch R. (1997). Low NOx options in catalytic combustion and emission control. Catal. Today 35:27−36. DOI:10.1016/S0920-5861(96)00131-9 [256] Persson K., Pfefferle L. D., Schwartz W., et al. (2007). Stability of palladium-based catalysts during catalytic combustion of methane: The influence of water. Appl. Catal. B-Environ. 74:242−250. DOI:10.1016/j.apcatb.2007.02.015 [257] Roth D., Gélin P., Primet M., et al. (2000). Catalytic behaviour of Cl-free and Cl-containing Pd/Al2O3 catalysts in the total oxidation of methane at low temperature. Appl. Catal. A-Gen. 203:37−45. DOI:10.1016/S0926-860X(00)00465-8 [258] Burch R., Urbano F. J. and Loader P. K. (1995). Methane combustion over palladium catalysts: The effect of carbon dioxide and water on activity. Appl. Catal. A-Gen. 123:173−184. DOI:10.1016/0926-860X(94)00251-7 [259] Ribeiro F. H., Chow M. and Dallabetta R. A. (1994). Kinetics of the complete oxidation of methane over supported palladium catalysts. J. Catal. 146:537−544. DOI:10.1006/jcat.1994.1092 [260] Sadokhina N., Ghasempour F., Auvray X., et al. (2017). An experimental and kinetic modelling study for methane oxidation over Pd-based catalyst: Inhibition by water. Catal. Lett. 147:2360−2371. DOI:10.1007/s10562-017-2133-2 [261] Schwartz W. R., Ciuparu D. and Pfefferle L. D. (2012). Combustion of methane over palladium-based catalysts: Catalytic deactivation and role of the support. J. Phys. Chem. C 116:8587−8593. DOI:10.1021/jp212236e [262] Velin P., Ek M., Skoglundh M., et al. (2019). Water inhibition in methane oxidation over alumina supported palladium catalysts. J. Phys. Chem. C 123:25724−25737. DOI:10.1021/acs.jpcc.9b07606 [263] Boucly A., Artiglia L., Roger M., et al. (2022). Water inhibition and role of palladium adatoms on Pd/Al2O3 catalysts during methane oxidation. Appl. Surf. Sci. 606:154927. DOI:10.1016/j.apsusc.2022.154927 [264] Keller K., Lott P., Stotz H., et al. (2020). Microkinetic modeling of the oxidation of methane over PdO catalysts—Towards a better understanding of the water inhibition effect. Catalysts 10:922. DOI:10.3390/catal10080922 [265] Bossche M. V. d. and Grönbeck H. (2015). Methane oxidation over PdO(101) revealed by first-principles kinetic modeling. J. Am. Chem. Soc. 137:12035−12044. DOI:10.1021/jacs.5b06069 [266] Jiang D., Khivantsev K. and Wang Y. (2020). Low-temperature methane oxidation for efficient emission control in natural gas vehicles: Pd and beyond. ACS Catal. 10:14304−14314. DOI:10.1021/acscatal.0c03338 [267] Toso A., Colussi S., Padigapaty S., et al. (2018). High stability and activity of solution combustion synthesized Pd-based catalysts for methane combustion in presence of water. Appl. Catal. B-Environ. 230:237−245. DOI:10.1016/j.apcatb.2018.02.049 [268] Peterson E. J., DeLaRiva A. T., Lin S., et al. (2014). Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on alumina. Nat. Commun. 5:4885. DOI:10.1038/ncomms5885 [269] Castellazzi P., Groppi G. and Forzatti P. (2010). Effect of Pt/Pd ratio on catalytic activity and redox behavior of bimetallic Pt–Pd/Al2O3 catalysts for CH4 combustion. Appl. Catal. B-Environ. 95:303−311. DOI:10.1016/j.apcatb.2010.01.008 [270] Geng H., Zhao H., Huang J., et al. (2023). Effect of highly active oxygen on methane catalytic removal at low temperatures using a core–shell structural catalyst. Chem. Eng. J. 469:143913. DOI:10.1016/j.cej.2023.143913 [271] Lee J., Young Kim M., Hong Jeon J., et al. (2020). Effect of Pt pre-sintering on the durability of PtPd/Al2O3 catalysts for CH4 oxidation. Appl. Catal. B-Environ. 260:118098. DOI:10.1016/j.apcatb.2019.118098 [272] Ciuparu D., Perkins E. and Pfefferle L. (2004). In situ DR-FTIR investigation of surface hydroxyls on γ-Al2O3 supported PdO catalysts during methane combustion. Appl. Catal. A-Gen. 263:145−153. DOI:10.1016/j.apcata.2003.12.006 [273] Wang Y., Liu C., Liao X., et al. (2021). Enhancing oxygen activation on high surface area Pd-SnO2 solid solution with isolated metal site catalysts for catalytic CH4 combustion. Appl. Surf. Sci. 564:150368. DOI:10.1016/j.apsusc.2021.150368 [274] Nassiri H., Hayes R. E. and Semagina N. (2019). Tin dioxide as an alternative to platinum promoter in palladium-catalyzed wet lean methane combustion. Top. Catal. 62:386−390. DOI:10.1007/s11244-018-1084-1 [275] Shen J., Hayes R. E. and Semagina N. (2021). On the contribution of oxygen from Co3O4 to the Pd-catalyzed methane combustion. Catal. Today 360:435−443. DOI:10.1016/j.cattod.2019.12.041 [276] Ercolino G., Stelmachowski P., Grzybek G., et al. (2017). Optimization of Pd catalysts supported on Co3O4 for low-temperature lean combustion of residual methane. Appl. Catal. B-Environ. 206:712−725. DOI:10.1016/j.apcatb.2017.01.055 [277] Lin J., Xu Y., Chen X., et al. (2023). Electron promoted palladium-cobalt active sites for efficient catalytic combustion of methane. J. Clean. Prod. 385:135744. DOI:10.1016/j.jclepro.2022.135744 [278] Kaya D., Singh D., Kincal S., et al. (2019). Facilitating role of Pd for hydrogen, oxygen and water adsorption/desorption processes from bulk CeO2 and CeO2/γ-Al2O3. Catal. Today 323:141−147. DOI:10.1016/j.cattod.2018.04.063 [279] Sajiv Kumar R., Hayes R. E. and Semagina N. (2021). Effect of support on Pd-catalyzed methane-lean combustion in the presence of water: Review. Catal. Today 382:82−95. DOI:10.1016/j.cattod.2021.07.024 [280] Friberg I. (2020). Complete methane oxidation over alumina and zeolite supported palladium for emission control. (ProQuest Dissertations & Theses). [281] Wu M., Li W., Ogunbiyi A. T., et al. (2021). Highly active and stable palladium catalysts supported on surface-modified ceria nanowires for lean methane combustion. ChemCatChem 13:664−673. DOI:10.1002/cctc.202001438 [282] Wang Y., Shen G., Wang C., et al. (2024). Mechanistic insights into the deactivation of Pd/BEA methane combustion catalysts by hydrothermal aging. Mol. Catal. 558 . DOI:10.1016/j.mcat.2024.114027. [283] Losch P., Huang W., Vozniuk O., et al. (2019). Modular Pd/Zeolite composites demonstrating the key role of support hydrophobic/hydrophilic character in methane catalytic combustion. ACS Catal. 9:4742−4753. DOI:10.1021/acscatal.9b00596 [284] Huang W., Zhang X., Yang A.-C., et al. (2020). Enhanced catalytic activity for methane combustion through in situ water sorption. ACS Catal. 10:8157−8167. DOI:10.1021/acscatal.0c02087 [285] Zhang Y., Glarborg P., Johansen K., et al. (2020). A rhodium-based methane oxidation catalyst with high tolerance to H2O and SO2. ACS Catal. 10:1821−1827. DOI:10.1021/acscatal.9b04464 [286] Yang W., Kim M.-Y., Polo-Garzon F., et al. (2023). CH4 combustion over a commercial Pd/CeO2-ZrO2 three-way catalyst: impact of thermal aging and sulfur exposure. Chem. Eng. J. 451:138930. DOI:10.1016/j.cej.2022.138930 [287] Monai M., Montini T., Melchionna M., et al. (2017). The effect of sulfur dioxide on the activity of hierarchical Pd-based catalysts in methane combustion. Appl. Catal. B-Environ. 202:72−83. DOI:10.1016/j.apcatb.2016.09.016 [288] Colussi S., Arosio F., Montanari T., et al. (2010). Study of sulfur poisoning on Pd/Al2O3 and Pd/CeO2/Al2O3 methane combustion catalysts. Catal. Today 155:59−65. DOI:10.1016/j.cattod.2009.02.019 [289] Lampert J. K., Kazi M. S. and Farrauto R. J. (1997). Palladium catalyst performance for methane emissions abatement from lean burn natural gas vehicles. Appl. Catal. B-Environ. 14:211−223. DOI:10.1016/S0926-3373(97)00024-6 [290] Hoyos L. J., Praliaud H. and Primet M. (1993). Catalytic combustion of methane over palladium supported on alumina and silica in presence of hydrogen sulfide. Appl. Catal. A-Gen. 98:125−138. DOI:10.1016/0926-860X(93)80028-O [291] Mowery D. L. and McCormick R. L. (2001). Deactivation of alumina supported and unsupported PdO methane oxidation catalyst: the effect of water on sulfate poisoning. Appl. Catal. B-Environ. 34:287−297. DOI:10.1016/S0926-3373(01)00222-3 [292] Yu T.-C. and Shaw H. (1998). The effect of sulfur poisoning on methane oxidation over palladium supported on γ-alumina catalysts. Appl. Catal. B-Environ. 18:105−114. DOI:10.1016/S0926-3373(98)00031-9 [293] Wilburn M. S. and Epling W. S. (2017). SO2 adsorption and desorption characteristics of Pd and Pt catalysts: Precious metal crystallite size dependence. Appl. Catal. A-Gen. 534:85−93. DOI:10.1016/j.apcata.2017.01.015 [294] Honkanen M., Wang J., Kärkkäinen M., et al. (2018). Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation. J. Catal. 358:253−265. DOI:10.1016/j.jcat.2017.12.021 [295] Ortloff F., Bohnau J., Kramar U., et al. (2016). Studies on the influence of H2S and SO2 on the activity of a PdO/Al2O3 catalyst for removal of oxygen by total oxidation of (bio-)methane at very low O2:CH4 ratios. Appl. Catal. B-Environ. 182:550−561. DOI:10.1016/j.apcatb.2015.09.026 [296] Arevalo R. L., Aspera S. M. and Nakanishi H. (2019). Sulfation of a PdO(101) methane oxidation catalyst: mechanism revealed by first principles calculations. Catal. Sci. Technol. 9:232−224. DOI:10.1039/c8cy02096e [297] Ordóñez S., Hurtado P. and Díez F. V. (2005). Methane catalytic combustion over Pd/Al2O3 in presence of sulphur dioxide: development of a regeneration procedure. Catal. Lett. 100:27−34. DOI:10.1007/s10562-004-3081-1 [298] Zou X., Ma Z., Deng J., et al. (2020). Core-shell PdO@SiO2/Al2O3 with sinter-resistance and water-tolerance promoting catalytic methane combustion. Chem. Eng. J. 396:125275. DOI:10.1016/j.cej.2020.125275 [299] Zhang Y., Zhu J., Li S., et al. (2020). Rational design of highly H2O- and CO2-tolerant hydroxyapatite-supported Pd catalyst for low-temperature methane combustion. Chem. Eng. J. 396:125225. DOI:10.1016/j.cej.2020.125225 [300] Gremminger A., Lott P., Merts M., et al. (2017). Sulfur poisoning and regeneration of bimetallic Pd-Pt methane oxidation catalysts. Appl. Catal. B-Environ. 218:833−843. DOI:10.1016/j.apcatb.2017.06.048 [301] Meeyoo V., Trimm D. L. and Cant N. W. (1998). The effect of sulphur containing pollutants on the oxidation activity of precious metals used in vehicle exhaust catalysts. Appl. Catal. B-Environ. 16:L101−L104. DOI:10.1016/S0926-3373(97)00094-5 [302] Wilburn M. S. and Epling W. S. (2017). Sulfur deactivation and regeneration of mono- and bimetallic Pd-Pt methane oxidation catalysts. Appl. Catal. B-Environ. 206:589−598. DOI:10.1016/j.apcatb.2017.01.050 [303] Wu J., Chen J., Ding Z.-b., et al. (2024). Strategies for improving sulfur resistance of lean methane oxidation catalysts: Progresses and future perspectives. Chem. Eng. J. 479:147640. DOI:10.1016/j.cej.2023.147640 [304] Escandón L. S., Ordóñez S., Vega A., et al. (2008). Sulphur poisoning of palladium catalysts used for methane combustion: Effect of the support. J. Hazard. Mater. 153:742−750. DOI:10.1016/j.jhazmat.2007.09.017 [305] Arosio F., Colussi S., Groppi G., et al. (2007). Regeneration of S-poisoned Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts for the combustion of methane. Top. Catal. 42:405−408. DOI:10.1007/s11244-007-0214-y [306] Arosio F., Colussi S., Trovarelli A., et al. (2008). Effect of alternate CH4-reducing/lean combustion treatments on the reactivity of fresh and S-poisoned Pd/CeO2/Al2O3 catalysts. Appl. Catal. B-Environ. 80:335−342. DOI:10.1016/j.apcatb.2007.11.030 [307] Zi X., Liu L., Xue B., et al. (2011). The durability of alumina supported Pd catalysts for the combustion of methane in the presence of SO2. Catal. Today 175:223−230. DOI:10.1016/j.cattod.2011.03.039 [308] Chenakin S. P., Melaet G., Szukiewicz R., et al. (2014). XPS study of the surface chemical state of a Pd/(SiO2+TiO2) catalyst after methane oxidation and SO2 treatment. J. Catal. 312:1−11. DOI:10.1016/j.jcat.2014.01.008 [309] Persson K., Ersson A., Carrera A. M., et al. (2005). Supported palladium-platinum catalyst for methane combustion at high pressure. Catal. Today 100:479−483. DOI:10.1016/j.cattod.2004.08.018 [310] Ersson A., Kusar H., Carroni R., et al. (2003). Catalytic combustion of methane over bimetallic catalysts a comparison between a novel annular reactor and a high-pressure reactor. Catal. Today 83:265−277. DOI:10.1016/s0920-5861(03)00247-5 [311] Strobel R., Grunwaldt J. D., Camenzind A., et al. (2005). Flame-made alumina supported Pd-Pt nanoparticles: Structural properties and catalytic behavior in methane combustion. Catal. Lett. 104:9−16. DOI:10.1007/s10562-005-7429-y [312] Massen C., Mortimer-Jones T. V. and Johnston R. L. (2002). Geometries and segregation properties of platinum–palladium nanoalloy clusters. J. Chem. Soc., Dalton Trans. 24:4375. DOI:10.1039/b207847c [313] Duan Z. and Wang G. (2011). Monte Carlo simulation of surface segregation phenomena in extended and nanoparticle surfaces of Pt-Pd alloys. J. Phys. Condens. Matter 23:475301. DOI:10.1088/0953-8984/23/47/475301 [314] Huang R., Wen Y.-H., Zhu Z.-Z., et al. (2012). Pt–Pd bimetallic catalysts: Structural and thermal stabilities of core–shell and alloyed nanoparticles. J. Phys. Chem. C 116:8664−8671. DOI:10.1021/jp3015639 [315] Yu Y., Fonfé B., Jentys A., et al. (2012). Bimetallic Pt–Pd/silica–alumina hydrotreating catalysts – Part I: Physicochemical characterization. J. Catal. 292:1−12. DOI:10.1016/j.jcat.2012.03.017 [316] Park J., Kim D., Byun S. W., et al. (2022). Impact of Pd:Pt ratio of Pd/Pt bimetallic catalyst on CH4 oxidation. Appl. Catal. B-Environ. 316:121623. DOI:10.1016/j.apcatb.2022.121623 [317] Lapisardi G., Urfels L., Gelin P., et al. (2006). Superior catalytic behaviour of Pt-doped Pd catalysts in the complete oxidation of methane at low temperature. Catal. Today 117:564−568. DOI:10.1016/j.cattod.2006.06.004 [318] Mussio A., Danielis M., Divins N. J., et al. (2021). Structural evolution of bimetallic PtPd/CeO2 methane oxidation catalysts prepared by dry milling. ACS Appl. Mater. Interfaces 13:31614−31623. DOI:10.1021/acsami.1c05050 [319] Qu P., Wang S., Hu W., et al. (2020). A novel strategy to design PtPd bimetallic catalysts for efficient methane combustion. Catal. Commun. 135:105900. DOI:10.1016/j.catcom.2019.105900 [320] Nassiri H., Lee K. E., Hu Y. F., et al. (2017). Platinum inhibits low-temperature dry lean methane combustion through palladium reduction in Pd-Pt/Al2O3: An insitu X-ray absorption study. ChemPhysChem 18:238−244. DOI:10.1002/cphc.201600993 [321] Kumar R. S., Hayes R. E. and Semagina N. (2023). Pd and Pd-Pt catalysts supported on SnO2 and γ-Al2O3: Kinetic studies of wet lean methane combustion. Chem. Eng. Sci. 269:118488. DOI:10.1016/j.ces.2023.118488 [322] Sadokhina N., Smedler G., Nylén U., et al. (2018). Deceleration of SO2 poisoning on PtPd/Al2O3 catalyst during complete methane oxidation. Appl. Catal. B-Environ. 236:384−395. DOI:10.1016/j.apcatb.2018.05.018 [323] Lott P., Eck M., Doronkin D. E., et al. (2020). Understanding sulfur poisoning of bimetallic Pd-Pt methane oxidation catalysts and their regeneration. Appl. Catal. B-Environ. 278:119244. DOI:10.1016/j.apcatb.2020.119244 [324] Li X., Shao J., Zheng J., et al. (2023). Fabrication and application of porous materials made from coal gangue: A review. Int. J. Appl. Ceram. Tec. 20:2099−2124. DOI:10.1111/ijac.14359 [325] Wang X.-D., Xu H.-Y., Zhang F.-J., et al. (2020). Preparation of porous cordierite ceramic with acid-leached coal gangue. J. Korean Ceram. Soc. 57:447−453. DOI:10.1007/s43207-020-00032-1 [326] Ma B., Su C., Ren X., et al. (2019). Preparation and properties of porous mullite ceramics with high-closed porosity and high strength from fly ash via reaction synthesis process. J. Alloy. Compd. 803:981−991. DOI:10.1016/j.jallcom.2019.06.272 [327] Jin Y., Li L., Liu Z., et al. (2021). Synthesis and characterization of low-cost zeolite NaA from coal gangue by hydrothermal method. Adv. Powder Technol. 32:791−801. DOI:10.1016/j.apt.2021.01.024 [328] Song L., Li J., Zhang Z., et al. (2021). La-containing magnetic zeolite synthesized from gangue by ball-milling method. Mater. Lett. 303:130542. DOI:10.1016/j.matlet.2021.130542 [329] Zhang M. and Wang X. (2021). Preparation of a gangue-based X‑type zeolite molecular sieve as a multiphase fenton catalyst and its catalytic performance. ACS Omega 6:18414−18425. DOI:10.1021/acsomega.1c02469 [330] Wu J., Yan X., Li L., et al. (2021). High-efficiency adsorption of Cr(VI) and RhB by hierarchical porous carbon prepared from coal gangue. Chemosphere 275:130008. DOI:10.1016/j.chemosphere.2021.130008 [331] Bahraminia S. and Anbia M. (2024). Carbon dioxide methanation using Ni catalysts supported on low-cost Lynde Type A zeolite synthesized from pretreated Iranian coal gangue. Int. J. Hydrog. Energy 83:842−855. DOI:10.1016/j.ijhydene.2024.08.022 [332] Li S., Yu J., Wei X., et al. (2014). Catalytic reduction of nitric oxide by carbon monoxide over coal gangue hollow ball. Fuel Process. Technol. 125:163−169. DOI:10.1016/j.fuproc.2014.04.005 -
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Kong F., Nie B., Jiang L, et al. (2025). Progress in palladium-based bimetallic catalysts for lean methane combustion: Towards harsh industrial applications . The Innovation Materials 3:100116. https://doi.org/10.59717/j.xinn-mater.2024.100116
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Kong F., Nie B., Jiang L, et al. (2025). Progress in palladium-based bimetallic catalysts for lean methane combustion: Towards harsh industrial applications . The Innovation Materials 3:100116. https://doi.org/10.59717/j.xinn-mater.2024.100116
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Figure 1.
Methane emission trends
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Figure 2.
The role of auxiliary metals
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Figure 3.
Summary of the preparation method of Pd-based bimetallic catalysts. Reproduced with permission.225 Copyright 2021, Springer Nature.
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Figure 4.
The behavior of Pd-based catalyst inactivation and its corresponding response strategies under high-temperature conditions.
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Figure 5.
Strategies to improve high temperature stability
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Figure 6.
The water toxicity behavior and associated response strategies of the Pd-based catalyst under high-humidity environments.
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Figure 7.
Strategies to improve resistance to water toxicity
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Figure 8.
The sulfur toxicity behavior and corresponding response strategies of Pd-based catalysts in sulfur-containing environments.
