Back to Search Start Over

Active copper structures in ZnO-Cu interfacial catalysis: CO2hydrogenation to methanol and reverse water-gas shift reactions

Authors :
Xiong, Wei
Wu, Zongfang
Chen, Xuanye
Ding, Jieqiong
Ye, Aiai
Zhang, Wenhua
Huang, Weixin
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