Irreversible Catalyst Deactivation Mechanisms of PdO/γ-Al2O3 Catalysts for Lean Methane Oxidation

Chen, Hai-Ying; Lugo-Jose, Yuliana; Fedeyko, Joseph M.; Toops, Todd J.; Fidler, Jacqueline

doi:10.1021/acscatal.4c03690

Title: Irreversible Catalyst Deactivation Mechanisms of PdO/γ-Al₂O₃ Catalysts for Lean Methane Oxidation

Journal Article · 09 October 2024 · ACS Catalysis

DOI: https://doi.org/10.1021/acscatal.4c03690 · OSTI ID:2475726

^[1]; Lugo-Jose, Yuliana ^[2]; Fedeyko, Joseph M. ^[2]; Toops, Todd J. ^[1]; Fidler, Jacqueline ^[3]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Johnson Matthey Inc., Wayne, PA (United States)
CONSOL Energy Inc., Canonsburg, PA (United States)

PdO/γ-Al₂O₃ catalysts suffer from gradual and irreversible catalyst deactivation under lean CH₄ oxidation conditions, especially in a wet feed. Here, time-resolved CO chemisorption DRIFTS measurements are conducted systematically on a series of PdO/γ-Al₂O₃ catalysts to probe the surface reactivity of PdO nanoparticles after various in situ pretreatments. At 80 °C, CO barely adsorbs on fully oxidized PdO surfaces but interacts with coordinatively unsaturated Pd sites, causing gradual reduction of the PdO surfaces. This results in the formation of characteristic IR bands on various metallic Pd⁰ sites. By monitoring and comparing the formation kinetics of these IR bands on samples before and after CH₄ oxidation, we theorize that the irreversible catalyst deactivation during CH₄ oxidation is caused by PdO surface reconstruction, in which coordinatively unsaturated Pd sites gradually become fully coordinated by oxygen. Effectively, the surface reconstruction leads to the formation of a passivation layer on the PdO nanoparticles, which hinders their ability in activating CH₄, and hence the subsequent oxidation reaction. Temperature-programmed reduction with CO as the reductant (CO-TPR) reveals that the passivation layer formed during CH₄ oxidation is significant enough to increase the reduction temperature of PdO nanoparticles of the 3.0% PdO/γ-Al₂O₃ samples, although such an effect is less obvious for the 0.4% PdO/γ-Al₂O₃ samples. On the other hand, it is also discovered that the passivation layer is not completely inert. Under certain reaction conditions, with some being relatively mild, such as low-temperature CO oxidation in a net lean atmosphere and in the presence of H₂O, the passivation layer can undergo structure change which results in regeneration or even activation of CH₄ oxidation activity of an already deactivated catalyst. Additionally, it is discovered that the fully coordinated Pd–O surface is a metastable phase under CH₄ oxidation conditions. In the presence of H₂O and at ambient temperatures, surfaces with coordinatively unsaturated Pd sites are thermodynamically more favorable.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: AC05-00OR22725; AR0001532

OSTI ID:: 2475726

Journal Information:: ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 20 Vol. 14; ISSN 2155-5435

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

References (71)

The Metal-Support Interaction Concerning the Particle Size Effect of Pd/Al ₂ O ₃ on Methane Combustion Murata, Kazumasa; Mahara, Yuji; Ohyama, Junya Angewandte Chemie International Edition, Vol. 56, Issue 50 https://doi.org/10.1002/anie.201709124	journal	November 2017
Understanding the Role of SnO ₂ Support in Water‐Tolerant Methane Combustion: In situ Observation of Pd(OH) ₂ and Comparison with Pd/Al ₂ O ₃ Barrett, William; Shen, Jing; Hu, Yongfeng ChemCatChem, Vol. 12, Issue 3 https://doi.org/10.1002/cctc.201901744	journal	December 2019
In situ Activation of Bimetallic Pd−Pt Methane Oxidation Catalysts Karinshak, Kyle A.; Lott, Patrick; Harold, Michael P. ChemCatChem, Vol. 12, Issue 14 https://doi.org/10.1002/cctc.202000603	journal	June 2020
Dynamics of the Reversible Inhibition during Methane Oxidation on Bimetallic Pd‐Pt Catalysts Studied by Modulation‐Excitation XAS and DRIFTS Boubnov, Alexey; Gremminger, Andreas; Casapu, Maria ChemCatChem, Vol. 14, Issue 22 https://doi.org/10.1002/cctc.202200573	journal	October 2022
Catalytic Oxidation of Methane: Pd and Beyond: Catalytic Oxidation of Methane: Pd and Beyond Monai, Matteo; Montini, Tiziano; Gorte, Raymond J. European Journal of Inorganic Chemistry, Vol. 2018, Issue 25 https://doi.org/10.1002/ejic.201800326	journal	June 2018
Kinetics of the Complete Oxidation of Methane over Supported Palladium Catalysts Ribeiro, F. H.; Chow, M.; Dallabetta, R. A. Journal of Catalysis, Vol. 146, Issue 2 https://doi.org/10.1006/jcat.1994.1092	journal	April 1994
Investigations of the Dispersion of Pd in H-ZSM-5 Aylor, Adam W.; Lobree, Lisa J.; Reimer, Jeffrey A. Journal of Catalysis, Vol. 172, Issue 2 https://doi.org/10.1006/jcat.1997.1893	journal	December 1997
Structure and Reactivity of PdOx/ZrO2Catalysts for Methane Oxidation at Low Temperatures Fujimoto, Ken-ichiro; Ribeiro, Fabio H.; Avalos-Borja, Miguel Journal of Catalysis, Vol. 179, Issue 2 https://doi.org/10.1006/jcat.1998.2178	journal	October 1998
Catalytic Oxidation of Methane over ZrO2-Supported Pd Catalysts Epling, William S.; Hoflund, Gar B. Journal of Catalysis, Vol. 182, Issue 1 https://doi.org/10.1006/jcat.1998.2341	journal	February 1999
Dynamic Behavior of Adsorbed NO and CO under Transient Conditions on Pd/Al2O3 Almusaiteer, Khalid; Chuang, Steven S. C. Journal of Catalysis, Vol. 184, Issue 1 https://doi.org/10.1006/jcat.1999.2417	journal	May 1999
Isotopic Studies of Methane Oxidation Pathways on PdO Catalysts Au-Yeung, Jacky; Chen, Kaidong; Bell, Alexis T. Journal of Catalysis, Vol. 188, Issue 1 https://doi.org/10.1006/jcat.1999.2643	journal	November 1999
Contributions of Lattice Oxygen in Methane Combustion over PdO-Based Catalysts Ciuparu, Dragos; Altman, Eric; Pfefferle, Lisa Journal of Catalysis, Vol. 203, Issue 1 https://doi.org/10.1006/jcat.2001.3331	journal	October 2001
Low Temperature NO Storage of Zeolite Supported Pd for Low Temperature Diesel Engine Emission Control Chen, Hai-Ying; Collier, Jillian E.; Liu, Dongxia Catalysis Letters, Vol. 146, Issue 9 https://doi.org/10.1007/s10562-016-1794-6	journal	June 2016
Particle Size Effect on CH4 Oxidation Over Noble Metals: Comparison of Pt and Pd Catalysts Stakheev, A. Yu.; Batkin, A. M.; Teleguina, N. S. Topics in Catalysis, Vol. 56, Issue 1-8 https://doi.org/10.1007/s11244-013-9971-y	journal	February 2013
Adsorption and Reaction of CO on (Pd–)Al2O3 and (Pd–)ZrO2: Vibrational Spectroscopy of Carbonate Formation Föttinger, Karin; Emhofer, Waltraud; Lennon, David Topics in Catalysis, Vol. 60, Issue 19-20 https://doi.org/10.1007/s11244-017-0852-7	journal	August 2017
A Comparison of Experimental Procedures for the Application of Infrared Spectroscopy to Probe the Surface Morphology of an Alumina-Supported Palladium Catalyst McCullagh, A. M.; Warringham, R.; Morisse, C. G. A. Topics in Catalysis, Vol. 64, Issue 17-20 https://doi.org/10.1007/s11244-021-01435-y	journal	April 2021
Characterization of supported palladium catalysts *1III. Pd/Al2O3 Juszczyk, W. Journal of Catalysis, Vol. 120, Issue 1 https://doi.org/10.1016/0021-9517(89)90251-0	journal	November 1989
Carbon monoxide restructuring of palladium crystallite surfaces Hicks, R. Journal of Catalysis, Vol. 124, Issue 2 https://doi.org/10.1016/0021-9517(90)90195-P	journal	August 1990
Methane combustion over palladium catalysts: The effect of carbon dioxide and water on activity Burch, R.; Urbano, F.; Loader, P. Applied Catalysis A: General, Vol. 123, Issue 1 https://doi.org/10.1016/0926-860X(94)00251-7	journal	March 1995
Catalytic combustion of methane over palladium supported on alumina catalysts: Evidence for reconstruction of particles Garbowski, Edouard; Feumi-Jantou, Christiane; Mouaddib, Najat Applied Catalysis A: General, Vol. 109, Issue 2 https://doi.org/10.1016/0926-860X(94)80124-X	journal	March 1994
Complete oxidation of methane at low temperature over noble metal based catalysts: a review Gélin, Patrick; Primet, Michel Applied Catalysis B: Environmental, Vol. 39, Issue 1, p. 1-37 https://doi.org/10.1016/S0926-3373(02)00076-0	journal	November 2002
Catalysts for combustion of methane and lower alkanes Choudhary, T. V.; Banerjee, S.; Choudhary, V. R. Applied Catalysis A: General, Vol. 234, Issue 1-2 https://doi.org/10.1016/S0926-860X(02)00231-4	journal	August 2002
Interaction of CO, NO and NO/CO over Pd/γ-Al2O3 and Pd-WOx/γ-Al2O3 catalysts Sica, Ana M.; Gigola, Carlos E. Applied Catalysis A: General, Vol. 239, Issue 1-2 https://doi.org/10.1016/S0926-860X(02)00380-0	journal	January 2003
Catalyst microstructure and methane oxidation reactivity during the Pd↔PdO transformation on alumina supports Datye, Abhaya K.; Bravo, Jaime; Nelson, Travis R. Applied Catalysis A: General, Vol. 198, Issue 1-2 https://doi.org/10.1016/S0926-860X(99)00512-8	journal	May 2000
In situ DR-FTIR investigation of surface hydroxyls on γ-Al2O3 supported PdO catalysts during methane combustion Ciuparu, Dragos; Perkins, Emily; Pfefferle, Lisa Applied Catalysis A: General, Vol. 263, Issue 2 https://doi.org/10.1016/j.apcata.2003.12.006	journal	June 2004
Synthesis of highly dispersed palladium alumina supported particles: Influence of the particle surface density on physico-chemical properties Benkhaled, M.; Morin, S.; Pichon, C. Applied Catalysis A: General, Vol. 312 https://doi.org/10.1016/j.apcata.2006.06.011	journal	September 2006
Characterization of well faceted palladium nanoparticles supported on alumina by transmission electron microscopy and FT-IR spectroscopy of CO adsorption Di Gregorio, F.; Bisson, L.; Armaroli, T. Applied Catalysis A: General, Vol. 352, Issue 1-2 https://doi.org/10.1016/j.apcata.2008.09.034	journal	January 2009
Zeolite supported Pd catalysts for the complete oxidation of methane: A critical review Chen, Hai-Ying; Lu, Jing; Fedeyko, Joseph M. Applied Catalysis A: General, Vol. 633 https://doi.org/10.1016/j.apcata.2022.118534	journal	March 2022
Total oxidation of methane at low temperature over Pd/TiO2/Al2O3: effects of the support and residual chlorine ions Lin, W.; Zhu, Y. X.; Wu, N. Z. Applied Catalysis B: Environmental, Vol. 50, Issue 1 https://doi.org/10.1016/j.apcatb.2004.03.009	journal	June 2004
Stability of palladium-based catalysts during catalytic combustion of methane: The influence of water Persson, Katarina; Pfefferle, Lisa D.; Schwartz, William Applied Catalysis B: Environmental, Vol. 74, Issue 3-4 https://doi.org/10.1016/j.apcatb.2007.02.015	journal	July 2007
Activity controlling factors for low-temperature oxidation of CO over supported Pd catalysts Satsuma, Atsushi; Osaki, Kaoru; Yanagihara, Masatoshi Applied Catalysis B: Environmental, Vol. 132-133 https://doi.org/10.1016/j.apcatb.2012.12.025	journal	March 2013
Understanding the reversible and irreversible deactivation of methane oxidation catalysts Mortensen, Rasmus Lykke; Noack, Hendrik-David; Pedersen, Kim Applied Catalysis B: Environmental, Vol. 344 https://doi.org/10.1016/j.apcatb.2023.123646	journal	May 2024
Calcination temperature effects on Pd/alumina catalysts: Particle size, surface species and activity in methane combustion Fertal, Domenica R.; Monai, Matteo; Proaño, Laura Catalysis Today, Vol. 382 https://doi.org/10.1016/j.cattod.2021.08.005	journal	December 2021
Assessing the effect of O2 dithering on CH4 oxidation on Pd/Al2O3 Roger, M.; Kröcher, O.; Ferri, D. Chemical Engineering Journal, Vol. 451 https://doi.org/10.1016/j.cej.2022.138865	journal	January 2023
Water shifts PdO-catalyzed lean methane combustion to Pt-catalyzed rich combustion in Pd–Pt catalysts: In situ X-ray absorption spectroscopy Nassiri, Hanieh; Lee, Kee-Eun; Hu, Yongfeng Journal of Catalysis, Vol. 352 https://doi.org/10.1016/j.jcat.2017.06.008	journal	August 2017
Methane oxidation over Pd/Al2O3 under rich/lean cycling followed by operando XAFS and modulation excitation spectroscopy Nilsson, Johan; Carlsson, Per-Anders; Martin, Natalia M. Journal of Catalysis, Vol. 356 https://doi.org/10.1016/j.jcat.2017.10.018	journal	December 2017
Surface reaction kinetics of methane oxidation over PdO Stotz, H.; Maier, L.; Boubnov, A. Journal of Catalysis, Vol. 370 https://doi.org/10.1016/j.jcat.2018.12.007	journal	February 2019
Alumina contribution to CO oxidation: A TPR and IR study Ammendola, P.; Barbato, P. S.; Lisi, L. Surface Science, Vol. 605, Issue 19-20 https://doi.org/10.1016/j.susc.2011.06.018	journal	October 2011
Vacancy-Mediated Processes in the Oxidation of CO on PdO(101) Weaver, Jason F.; Zhang, Feng; Pan, Li Accounts of Chemical Research, Vol. 48, Issue 5 https://doi.org/10.1021/acs.accounts.5b00101	journal	May 2015
Kinetic Analysis of the Inhibition of CH ₄ Oxidation by H ₂ O on PdO/Al ₂ O ₃ and CeO ₂ /PdO/Al ₂ O ₃ Catalysts Alyani, Mina; Smith, Kevin J. Industrial & Engineering Chemistry Research, Vol. 55, Issue 30 https://doi.org/10.1021/acs.iecr.6b01881	journal	July 2016
The Effect of Prereduction on the Performance of Pd/Al ₂ O ₃ and Pd/CeO ₂ Catalysts during Methane Oxidation Lott, Patrick; Dolcet, Paolo; Casapu, Maria Industrial & Engineering Chemistry Research, Vol. 58, Issue 28 https://doi.org/10.1021/acs.iecr.9b01267	journal	June 2019
Water Inhibition in Methane Oxidation over Alumina Supported Palladium Catalysts Velin, Peter; Ek, Martin; Skoglundh, Magnus The Journal of Physical Chemistry C, Vol. 123, Issue 42 https://doi.org/10.1021/acs.jpcc.9b07606	journal	October 2019
Role of Water on the Structure of Palladium for Complete Oxidation of Methane Li, Xiansheng; Wang, Xing; Roy, Kanak ACS Catalysis, Vol. 10, Issue 10 https://doi.org/10.1021/acscatal.0c01069	journal	April 2020
Methane Combustion over Pd/Al ₂ O ₃ Catalysts in the Presence of Water: Effects of Pd Particle Size and Alumina Crystalline Phase Murata, Kazumasa; Ohyama, Junya; Yamamoto, Yuta ACS Catalysis, Vol. 10, Issue 15 https://doi.org/10.1021/acscatal.0c02050	journal	June 2020
CH ₄ Oxidation Activity in Pd and Pt–Pd Bimetallic Catalysts: Correlation with Surface PdO _x Quantified from the DRIFTS Study Jang, Eun Jeong; Lee, Jaekyoung; Oh, Dong Gun ACS Catalysis, Vol. 11, Issue 10 https://doi.org/10.1021/acscatal.1c00156	journal	April 2021
Effect of Short Reducing Pulses on the Dynamic Structure, Activity, and Stability of Pd/Al₂O₃ for Wet Lean Methane Oxidation Franken, Tanja; Roger, Maneka; Petrov, Andrey W. ACS Catalysis, Vol. 11, Issue 8 https://doi.org/10.1021/acscatal.1c00328	journal	April 2021
Mechanism of CO ₂ Hydrogenation on Pd/Al ₂ O ₃ Catalysts: Kinetics and Transient DRIFTS-MS Studies Wang, Xiang; Shi, Hui; Kwak, Ja Hun ACS Catalysis, Vol. 5, Issue 11 https://doi.org/10.1021/acscatal.5b01464	journal	September 2015
Systematic Structure–Property Relationship Studies in Palladium-Catalyzed Methane Complete Combustion Willis, Joshua J.; Gallo, Alessandro; Sokaras, Dimosthenis ACS Catalysis, Vol. 7, Issue 11 https://doi.org/10.1021/acscatal.7b02414	journal	October 2017
Operando and Kinetic Study of Low-Temperature, Lean-Burn Methane Combustion over a Pd/γ-Al ₂ O ₃ Catalyst Xu, Jing; Ouyang, Like; Mao, Wei ACS Catalysis, Vol. 2, Issue 2 https://doi.org/10.1021/cs200694k	journal	January 2012
Stoichiometric adsorbate species interconversion processes in the chemisorbed layer. An infrared study of the carbon monoxide/palladium system Gelin, Patrick; Siedle, Allen R.; Yates, John T. The Journal of Physical Chemistry, Vol. 88, Issue 14 https://doi.org/10.1021/j150658a012	journal	July 1984
Consequences of Metal–Oxide Interconversion for C–H Bond Activation during CH ₄ Reactions on Pd Catalysts Chin, Ya-Huei (Cathy); Buda, Corneliu; Neurock, Matthew Journal of the American Chemical Society, Vol. 135, Issue 41 https://doi.org/10.1021/ja405004m	journal	October 2013
Onset of High Methane Combustion Rates over Supported Palladium Catalysts: From Isolated Pd Cations to PdO Nanoparticles Cui, Yanran; Zhu Chen, Johnny; Peng, Bo JACS Au, Vol. 1, Issue 4 https://doi.org/10.1021/jacsau.0c00109	journal	March 2021
CO Oxidation on Technological Pd−Al ₂ O ₃ Catalysts: Oxidation State and Activity Zorn, Katrin; Giorgio, Suzanne; Halwax, Erich The Journal of Physical Chemistry C, Vol. 115, Issue 4 https://doi.org/10.1021/jp106235x	journal	September 2010
Combustion of Methane over Palladium-Based Catalysts: Support Interactions Schwartz, William R.; Pfefferle, Lisa D. The Journal of Physical Chemistry C, Vol. 116, Issue 15 https://doi.org/10.1021/jp2119668	journal	April 2012
Combustion of Methane over Palladium-Based Catalysts: Catalytic Deactivation and Role of the Support Schwartz, William R.; Ciuparu, Dragos; Pfefferle, Lisa D. The Journal of Physical Chemistry C, Vol. 116, Issue 15 https://doi.org/10.1021/jp212236e	journal	April 2012
CO Adsorption on Clean and Oxidized Pd(111) Martin, N. M.; Van den Bossche, M.; Grönbeck, H. The Journal of Physical Chemistry C, Vol. 118, Issue 2 https://doi.org/10.1021/jp410895c	journal	December 2013
CO Oxidation on PdO(101) during Temperature-Programmed Reaction Spectroscopy: Role of Oxygen Vacancies Zhang, Feng; Pan, Li; Li, Tao The Journal of Physical Chemistry C, Vol. 118, Issue 49 https://doi.org/10.1021/jp509383v	journal	November 2014
Role of Lattice Oxygen in the Combustion of Methane over PdO/ZrO₂: Combined Pulse TG/DTA and MS Study with ¹⁸O-Labeled Catalyst Müller, Christian A.; Maciejewski, Marek; Koeppel, René A. The Journal of Physical Chemistry, Vol. 100, Issue 51 https://doi.org/10.1021/jp961903a	journal	January 1996
Infrared Study of CO Adsorbed on Pd/Al ₂ O ₃ −ZrO ₂ . Effect of Zirconia Added by Impregnation Tiznado, Hugo; Fuentes, Sergio; Zaera, Francisco Langmuir, Vol. 20, Issue 24 https://doi.org/10.1021/la049606h	journal	November 2004
The role of steps in surface catalysis and reaction oscillations Hendriksen, Bas L. M.; Ackermann, Marcelo D.; van Rijn, Richard Nature Chemistry, Vol. 2, Issue 9 https://doi.org/10.1038/nchem.728	journal	July 2010
Stable complete methane oxidation over palladium based zeolite catalysts Petrov, Andrey W.; Ferri, Davide; Krumeich, Frank Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-04748-x	journal	June 2018
Periodic structural changes in Pd nanoparticles during oscillatory CO oxidation reaction Ghosh, Tanmay; Arce-Ramos, Juan Manuel; Li, Wen-Qing Nature Communications, Vol. 13, Issue 1 https://doi.org/10.1038/s41467-022-33304-x	journal	October 2022
Comparison of the reactivity of different Pd–O species in CO oxidation Gabasch, Harald; Knop-Gericke, Axel; Schlögl, Robert Phys. Chem. Chem. Phys., Vol. 9, Issue 4 https://doi.org/10.1039/B610719B	journal	January 2007
Spatiotemporal insights into forced dynamic reactor operation for fast light-off of Pd-based methane oxidation catalysts Keller, Kevin; Hodonj, Daniel; Zeh, Lukas Catalysis Science & Technology, Vol. 14, Issue 15 https://doi.org/10.1039/D4CY00625A	journal	January 2024
Spectroscopic study of the interaction of carbon monoxide with cationic and metallic palladium in palladium–alumina catalysts Tessier, Didier; Rakai, Ahmed; Bozon-Verduraz, François J. Chem. Soc., Faraday Trans., Vol. 88, Issue 5 https://doi.org/10.1039/FT9928800741	journal	January 1992
The application of infrared spectroscopy to probe the surface morphology of alumina-supported palladium catalysts Lear, Timothy; Marshall, Robert; Antonio Lopez-Sanchez, J. The Journal of Chemical Physics, Vol. 123, Issue 17 https://doi.org/10.1063/1.2101487	journal	November 2005
Catalytic Combustion of Methane over Palladium-Based Catalysts Ciuparu, Dragos; Lyubovsky, Maxim R.; Altman, Eric Catalysis Reviews, Vol. 44, Issue 4 https://doi.org/10.1081/CR-120015482	journal	December 2002
Thermodynamic stability of PdO surfaces Rogal, Jutta; Reuter, Karsten; Scheffler, Matthias Physical Review B, Vol. 69, Issue 7 https://doi.org/10.1103/PhysRevB.69.075421	journal	February 2004
Methane Emission Control Raj, By Agnes Johnson Matthey Technology Review, Vol. 60, Issue 4 https://doi.org/10.1595/205651316X692554	journal	October 2016
Deactivation of Pd Catalysts by Water during Low Temperature Methane Oxidation Relevant to Natural Gas Vehicle Converters Gholami, Rahman; Alyani, Mina; Smith, Kevin Catalysts, Vol. 5, Issue 2 https://doi.org/10.3390/catal5020561	journal	March 2015
Understanding of Active Sites and Interconversion of Pd and PdO during CH4 Oxidation Oh, Dong Gun; Aleksandrov, Hristiyan A.; Kim, Haneul Molecules, Vol. 28, Issue 4 https://doi.org/10.3390/molecules28041957	journal	February 2023

Similar Records

Catalyst Deactivation Modes of PdO/γ-Al₂O₃ Catalysts for Lean Methane Oxidation

Journal Article · 2025 · Johnson Matthey Technology Review · OSTI ID:2588281

Chen, Haiying; Lugo-Jose, Yuliana; Fedeyko, Joseph M.; +4 more

Understanding of Active Sites and Interconversion of Pd and PdO during CH₄ Oxidation

Journal Article · 2023 · Molecules · OSTI ID:2471617

Oh, Dong Gun; Aleksandrov, Hristiyan A.; Kim, Haneul; +4 more

Catalytic oxidation of methane over ZrO{sub 2}-supported Pd catalysts

Journal Article · 1999 · Journal of Catalysis · OSTI ID:328293

Epling, W S; Hoflund, G B

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CO Chemisorption
Catalyst Deactivation
DRIFTS Spectrum
Methane Oxidation
PdO/γ-Al2O3
Surface Reconstruction

Title: Irreversible Catalyst Deactivation Mechanisms of PdO/γ-Al2O3 Catalysts for Lean Methane Oxidation

Citation Formats

References (71)

Similar Records

Related Subjects

Title: Irreversible Catalyst Deactivation Mechanisms of PdO/γ-Al₂O₃ Catalysts for Lean Methane Oxidation