Exploring the Synergistic Interaction between Nickel- and Ruthenium-Based Catalysts for Carbon Dioxide Methanation Reaction
The utilization of nickel-ruthenium as bimetallic catalysts is widely recognized for its efficacy in enhancing the catalytic performance in the carbon dioxide methanation reaction. The present study focuses on the synergistic interplay between both active sites and their respective roles in the reac...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/398146 |
| Acceso en línea: | http://hdl.handle.net/10261/398146 https://api.elsevier.com/content/abstract/scopus_id/105007504252 |
| Access Level: | acceso abierto |
| Palabra clave: | CO2 hydrogenation bimetallic catalyst IR spectroscopy operando DRIFTS reaction mechanism Ru−Ni-based catalysts http://metadata.un.org/sdg/7 http://metadata.un.org/sdg/13 Ensure access to affordable, reliable, sustainable and modern energy for all Take urgent action to combat climate change and its impacts |
| Sumario: | The utilization of nickel-ruthenium as bimetallic catalysts is widely recognized for its efficacy in enhancing the catalytic performance in the carbon dioxide methanation reaction. The present study focuses on the synergistic interplay between both active sites and their respective roles in the reaction mechanism through operando DRIFT-MS analysis. Findings reveal that the bimetallic catalyst is constituted by NiRu nanocrystallites with Ru atoms segregated at defect edge/corner sites, promoting the dissociation of carbon dioxide and the formation of CH<inf>x</inf> species. Furthermore, Ni atoms predominantly occupy facets or terrace sites, characterized by higher electron density conducive to carbon monoxide hydrogenation to methane. This research offers a comprehensive elucidation of the carbon dioxide methanation mechanism within a bimetallic system and underscores the efficacy of the operando methodology in advancing our fundamental understanding of heterogeneous catalysis. |
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