Hydrogenation of CO2 to Methanol at Atmospheric Pressure over Cu/ZnO Catalysts: Influence of the Calcination, Reduction, and Metal Loading
Cu/ZnO catalysts have been widely studied for the hydrogenation of carbon dioxide to methanol at atmospheric pressure. In the work described here, several interesting issues are highlighted that have rarely been considered previously. An extensive study of the influence of the calcination and reduct...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/29703 |
| Acceso en línea: | http://hdl.handle.net/10578/29703 |
| Access Level: | acceso abierto |
| Palabra clave: | Oxides Alcohols Copper Redox reactions Catalysts Óxidos Alcoholes Cobre Reacciones redox Catalizadores |
| Sumario: | Cu/ZnO catalysts have been widely studied for the hydrogenation of carbon dioxide to methanol at atmospheric pressure. In the work described here, several interesting issues are highlighted that have rarely been considered previously. An extensive study of the influence of the calcination and reduction temperatures and the metal loading was carried out. The best conditions found for catalyst preparation were calcination at 350 °C and reduction at 200 °C. The role of the different oxidation states of copper (Cu2+, Cu1+, and Cu0) was proven in the methane and methanol formation. CuZn alloy formation was observed when a reduction temperature of 400 °C was used. The use of this alloy led to higher methanol selectivity at higher temperatures (>200 °C). Finally, the metal loading study confirm the dual-site nature of the methanol synthesis mechanism |
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