Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.apcatb.2022.121098
Title: CO2 hydrogenation to methanol on tungsten-doped Cu/CeO2 catalysts
Authors: Yan, Y
Wong, RJ
Ma, Z
Donat, F
Xi, S
Saqline, S
Fan, Q
Du, Y
Borgna, A 
He, Q 
Müller, CR
Chen, W 
Lapkin, AA 
Liu, W
Issue Date: 5-Jun-2022
Publisher: Elsevier BV
Citation: Yan, Y, Wong, RJ, Ma, Z, Donat, F, Xi, S, Saqline, S, Fan, Q, Du, Y, Borgna, A, He, Q, Müller, CR, Chen, W, Lapkin, AA, Liu, W (2022-06-05). CO2 hydrogenation to methanol on tungsten-doped Cu/CeO2 catalysts. Applied Catalysis B: Environmental 306 : 121098-121098. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apcatb.2022.121098
Abstract: The catalytic hydrogenation of CO2 to methanol depends significantly on the structures of metal-oxide interfaces. We show that doping a high-valency metal, viz. tungsten, to CeO2 could render improved catalytic activity for the hydrogenation of CO2 on a Cu/CeW0.25Ox catalyst, whilst making it more selective towards methanol than the undoped Cu/CeO2. We experimentally investigated and elucidated the structural-functional relationship of the Cu/CeO2 interface for CO2 hydrogenation. The promotional effects are attributed to the irreversible reduction of Ce4+ to Ce3+ by W-doping, the suppression of the formation of redox-active oxygen vacancies on CeO2, and the activation of the formate pathway for CO2 hydrogenation. This catalyst design strategy differs fundamentally from those commonly used for CeO2-supported catalysts, in which oxygen vacancies with high redox activity are considered desirable.
Source Title: Applied Catalysis B: Environmental
URI: https://scholarbank.nus.edu.sg/handle/10635/216336
ISSN: 09263373
DOI: 10.1016/j.apcatb.2022.121098
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