Design of catalysts for selective CO2 hydrogenation
CO2 hydrogenation with green hydrogen is a practical approach for the reduction of CO2 emissions and generation of high-value added chemicals. Generally, product selectivity is determined by the associated reaction mechanisms, internal catalyst identity and structure, and external reaction condition...
| Autores: | , , , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/382349 |
| Acesso em linha: | http://hdl.handle.net/10261/382349 |
| Access Level: | acceso abierto |
| Palavra-chave: | Catalytic mechanisms Chemical engineering Green chemistry Heterogeneous catalysis 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 |
| Resumo: | CO2 hydrogenation with green hydrogen is a practical approach for the reduction of CO2 emissions and generation of high-value added chemicals. Generally, product selectivity is determined by the associated reaction mechanisms, internal catalyst identity and structure, and external reaction conditions. Herein, we examine typical CO2 hydrogenation reaction pathways, which can provide insight useful for the atomic-level design of catalysts. We discuss how catalyst chemical states, particle sizes, crystal facets, synergistic effects, and unique structures can tune the product selectivity. Different catalysts such as Fe, Co, Ni, Cu, Ru, Rh, Pd-based and bifunctional structured catalysts and their influence on the CO2 hydrogenation products (such as CO, methane, methanol, ethanol and light olefins) are discussed. Beyond catalyst design, emerging catalytic reaction engineering methods for assisting the tuning of product selectivity are also discussed. Future challenges and perspectives in this field are explored to motivate the design of next-generation selective CO2 hydrogenation processes to facilitate the transition towards carbon neutrality. |
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