Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation
Discovered almost 130 years ago by P. Sabatier, CO2 hydrogenation to methane (CO2 methanation) is presently attracting attention as one of the most promising methods for storing intermittent renewable energy in the form of chemical fuels. Ni particles supported by CeO2 constitute a very effective, r...
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Wiley-VCH
2025-05-01
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| Online Access: | https://doi.org/10.1002/smsc.202400540 |
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| author | Mathias Barreau Davide Salusso Jinming Zhang Michael Haevecker Detre Teschner Anna Efimenko Elisa Borfecchia Kamil Sobczak Spyridon Zafeiratos |
| author_facet | Mathias Barreau Davide Salusso Jinming Zhang Michael Haevecker Detre Teschner Anna Efimenko Elisa Borfecchia Kamil Sobczak Spyridon Zafeiratos |
| author_sort | Mathias Barreau |
| collection | DOAJ |
| description | Discovered almost 130 years ago by P. Sabatier, CO2 hydrogenation to methane (CO2 methanation) is presently attracting attention as one of the most promising methods for storing intermittent renewable energy in the form of chemical fuels. Ni particles supported by CeO2 constitute a very effective, reliable, and reasonably priced catalyst for CO2 methanation. Recently a new type of CO2 methanation catalyst, consisting of cerium oxide (ceria) nanoparticles doped with nickel (NiCeOx) in a specific square‐planar configuration with an extremely high‐Ni mass‐specific activity and almost 100% CH4 selectivity, was reported. Here, a 50% enhancement in the CO2 conversion of the NiCeOx catalyst by carefully adjusting the calcination temperature is demonstrated. Notably, thermal aging at 600 °C enhances methanation performance by partially exsolving Ni to the surface, while higher temperatures (750 °C) lead to larger Ni particles, increased CO production, and surface carbon deposition. Several in situ and operando characterization methods are employed to correlate the thermal activation and deactivation of the catalyst with its nanoscale characteristics. Apart from their clear implications for the design of next‐generation Ni‐based CO2 methanation catalysts, these findings significantly enhance understanding of the complex interplay and nature of various surface sites involved in CO2 hydrogenation. |
| format | Article |
| id | doaj-art-ab41d84b85b94c5a9a9b0a671c19ecda |
| institution | Kabale University |
| issn | 2688-4046 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Science |
| spelling | doaj-art-ab41d84b85b94c5a9a9b0a671c19ecda2025-08-20T03:52:29ZengWiley-VCHSmall Science2688-40462025-05-0155n/an/a10.1002/smsc.202400540Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 MethanationMathias Barreau0Davide Salusso1Jinming Zhang2Michael Haevecker3Detre Teschner4Anna Efimenko5Elisa Borfecchia6Kamil Sobczak7Spyridon Zafeiratos8Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), ECPM UMR 7515 CNRS – Université de Strasbourg 25 rue Becquerel 67087 Strasbourg Cedex 02 FranceEuropean Synchrotron Radiation Facility CS 40220 Cedex 9 F‐38043 Grenoble FranceInstitut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), ECPM UMR 7515 CNRS – Université de Strasbourg 25 rue Becquerel 67087 Strasbourg Cedex 02 FranceMax‐Planck‐Institut für Chemische Energiekonversion (MPI‐CEC) Stiftstrasse 34‐36 D‐45470 Mülheim a.d. Ruhr GermanyMax‐Planck‐Institut für Chemische Energiekonversion (MPI‐CEC) Stiftstrasse 34‐36 D‐45470 Mülheim a.d. Ruhr GermanyInterface Design Helmholtz‐Zentrum Berlin für Materialien und Energie GmbH (HZB) Albert‐Einstein‐Str. 15 12489 Berlin GermanyDepartment of Chemistry INSTM Reference Center and NIS Centers University of Torino 10125 Torino ItalyFaculty of Chemistry Biological and Chemical Research Centre University of Warsaw Zwirki, Wigury 101 02‐089 Warsaw PolandInstitut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), ECPM UMR 7515 CNRS – Université de Strasbourg 25 rue Becquerel 67087 Strasbourg Cedex 02 FranceDiscovered almost 130 years ago by P. Sabatier, CO2 hydrogenation to methane (CO2 methanation) is presently attracting attention as one of the most promising methods for storing intermittent renewable energy in the form of chemical fuels. Ni particles supported by CeO2 constitute a very effective, reliable, and reasonably priced catalyst for CO2 methanation. Recently a new type of CO2 methanation catalyst, consisting of cerium oxide (ceria) nanoparticles doped with nickel (NiCeOx) in a specific square‐planar configuration with an extremely high‐Ni mass‐specific activity and almost 100% CH4 selectivity, was reported. Here, a 50% enhancement in the CO2 conversion of the NiCeOx catalyst by carefully adjusting the calcination temperature is demonstrated. Notably, thermal aging at 600 °C enhances methanation performance by partially exsolving Ni to the surface, while higher temperatures (750 °C) lead to larger Ni particles, increased CO production, and surface carbon deposition. Several in situ and operando characterization methods are employed to correlate the thermal activation and deactivation of the catalyst with its nanoscale characteristics. Apart from their clear implications for the design of next‐generation Ni‐based CO2 methanation catalysts, these findings significantly enhance understanding of the complex interplay and nature of various surface sites involved in CO2 hydrogenation.https://doi.org/10.1002/smsc.202400540CO2 methanationin situ and operando spectroscopynickel-ceria catalystsurface exsolutionthermal activation |
| spellingShingle | Mathias Barreau Davide Salusso Jinming Zhang Michael Haevecker Detre Teschner Anna Efimenko Elisa Borfecchia Kamil Sobczak Spyridon Zafeiratos Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation Small Science CO2 methanation in situ and operando spectroscopy nickel-ceria catalyst surface exsolution thermal activation |
| title | Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation |
| title_full | Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation |
| title_fullStr | Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation |
| title_full_unstemmed | Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation |
| title_short | Thermal Activation and Deactivation of Ni‐Doped Ceria Catalysts in CO2 Methanation |
| title_sort | thermal activation and deactivation of ni doped ceria catalysts in co2 methanation |
| topic | CO2 methanation in situ and operando spectroscopy nickel-ceria catalyst surface exsolution thermal activation |
| url | https://doi.org/10.1002/smsc.202400540 |
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