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Active copper structures in ZnO-Cu interfacial catalysis: CO2hydrogenation to methanol and reverse water-gas shift reactions
- Source :
- SCIENCE CHINA Chemistry; February 2024, Vol. 67 Issue: 2 p715-723, 9p
- Publication Year :
- 2024
-
Abstract
- Cu-ZnO-based catalysts are widely used to catalyze the CO2hydrogenation to methanol and reverse water-gas shift (RWGS) reactions. Herein, viaa combined experimental and theoretical calculation study of various Cu nanocrystals (NCs) with well-defined Cu facets and corresponding ZnO/Cu NC inverse catalysts, we demonstrate the Cu{110} facets as the most active facet for ZnO-Cu interfacial catalysis in the CO2hydrogenation to methanol with an apparent activation energy as low as 25.3±3 kJ mol−1and the Cu{100} facets as the most active facet for both ZnO-Cu interfacial catalysis and Cu catalysis in the RWGS reaction. Although the ZnO-Cu interface is more active in catalyzing the RWGS reaction than the Cu surface, the RWGS reaction occurs mainly on the bare Cu surface of ZnO/Cu inverse catalysts under the CO2hydrogenation to methanol instead of that at the ZnO-Cu interface. This fundamental understanding will greatly help to fabricate efficient Cu-ZnO-based catalysts for the CO2hydrogenation to methanol.
Details
- Language :
- English
- ISSN :
- 16747291 and 18691870
- Volume :
- 67
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- SCIENCE CHINA Chemistry
- Publication Type :
- Periodical
- Accession number :
- ejs64035797
- Full Text :
- https://doi.org/10.1007/s11426-023-1802-7