期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 60, 页码 7382-7385出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc02728j
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资金
- Institute for Basic Science (IBS) [IBS-R004]
In methanol partial oxidation, platinum-supported nano cube CeO2 catalyst showed higher turnover frequency, while nanosphere catalyst exhibited higher selectivity towards methyl formate. The observed ceria shape effect is associated with shape-dependent platinum dispersion and oxidation states. Reductive platinum and mono-dentate methoxy group were found to be responsible for the higher turnover frequency through in situ studies.
The effect of platinum-supported nano-shaped ceria catalysts on methanol partial oxidation and methyl formate product selectivity has been investigated. A Pt-supported CeO2 nanocube catalyst had a higher turnover frequency than nanosphere catalysts; however, nanosphere catalysts showed higher selectivity towards methyl formate. The observed ceria shape effect in catalysis was associated with the shape-dependent Pt dispersion and its oxidation states. Furthermore, in situ studies revealed that the reduced platinum and mono-dentate methoxy group were responsible for the higher turnover frequency.
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