Strong Evidence of the Role of H2O in Affecting Methanol Selectivity from CO2 Hydrogenation over Cu-ZnO-ZrO2
[3];
- Kunming Univ. of Science and Technology (China)
- Kunming Univ. of Science and Technology (China); Columbia Univ., New York, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Kunming Univ. of Science and Technology (China); Dali Univ. (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States); Columbia Univ., New York, NY (United States)
CO2 hydrogenation to methanol with renewable H2 is an ideal process for coupling reduction of greenhouse gas and development of sustainable methanol economy, and Cu-ZnO-ZrO2 is regarded as a promising catalyst for this process. Identification of the key descriptors that control the catalytic activity and selectivity is one of the most important issues for this reaction. In this work, we identify the role of water in the hydrogenation of CO2 to methanol, which strongly affects the selectivity and yield of methanol. Our results reveal that methanol is generated via the hydrolysis of methoxy formed by the hydrogenation of formate, and the desorbed water vapor facilitates the hydrolysis of methoxy. A suitable amount of water in the feed can promote the formation of methanol. The enhancement on the water vapor diffusion in catalysts by structural and/or surface modification offers a new strategy for tuning the selectivity and yield of methanol.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1614975
- Alternate ID(s):
- OSTI ID: 1703087
- Report Number(s):
- BNL--213833-2020-JAAM
- Journal Information:
- Chem, Journal Name: Chem Journal Issue: 2 Vol. 6; ISSN 2451-9294
- Publisher:
- Cell Press, ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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