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Optimizing interfacial interaction between Cu and metal oxides boosts methanol yield in CO2 hydrogenation.
- Source :
- Research on Chemical Intermediates; Sep2023, Vol. 49 Issue 9, p3933-3950, 18p
- Publication Year :
- 2023
-
Abstract
- Thermocatalytic conversion of redundant CO<subscript>2</subscript> to useful methanol is an attractive route to address both energy and environmental crises simultaneously. However, existing copper/oxide catalysts widely used in these thermocatalytic processes still suffer from low methanol yield under mild reaction conditions. In this work, we design inverse oxide/Cu catalysts to achieve superior thermal catalytic performance for CO<subscript>2</subscript> hydrogenation. The optimized ZnO/Cu-1.0 catalyst exhibits maximum CH<subscript>3</subscript>OH selectivity of 83.4% and space–time yield (STY) of 170.9 g CH 3 OH kg cat - 1 h - 1 in CO<subscript>2</subscript> hydrogenation at 210 °C, nearly twofold higher STY than the previous optimal inverse ZnO/Cu catalysts ( 89.6 g CH 3 OH kg cat - 1 h - 1 at 250 °C). Importantly, ZnO/Cu-1.0 catalyst displayed not only a satisfactory catalytic stability but also a superior CH<subscript>3</subscript>OH STY with a time-on-stream of 24 h. Such inverse configuration of catalysts will pave the way for new strategies to design high-performance thermocatalytic catalysts and promote their commercialization. Typical inverse ZnO/Cu-1.0 catalysts have been demonstrated and achieved to significantly facilitate the activation of inert CO<subscript>2</subscript> molecules to produce methanol, due to its special physicochemical properties and strong ZnO–Cu interaction [ABSTRACT FROM AUTHOR]
- Subjects :
- METALLIC oxides
COPPER
HYDROGENATION
ENERGY shortages
STYE
Subjects
Details
- Language :
- English
- ISSN :
- 09226168
- Volume :
- 49
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Research on Chemical Intermediates
- Publication Type :
- Academic Journal
- Accession number :
- 169968907
- Full Text :
- https://doi.org/10.1007/s11164-023-05063-x