期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202200763
关键词
Acetone Oxidation; Electronic Metal-Support Interactions; Intrinsic Mechanism; Single-Atom Catalysts
资金
- National Natural Science Foundation of China [21922606, 21876139]
- Key R&D Program of Shaanxi Province [2019SF-244, 2019ZDLSF05-05-02]
- Shaanxi Natural Science Fundamental Shaanxi Coal Chemical Joint Fund [2019JLM14]
Modulation of electronic metal-support interactions significantly enhances the catalytic activity of single-atom catalysts in acetone oxidation.
The development of highly active single-atom catalysts (SACs) and identifying their intrinsic active sites in oxidizing industrial hazardous hydrocarbons are challenging prospects. Tuning the electronic metal-support interactions (EMSIs) is valid for modulating the catalytic performance of SACs. We propose that the modulation of the EMSIs in a Pt-1-CuO SAC significantly promotes the activity of the catalyst in acetone oxidation. The EMSIs promote charge redistribution through the unified Pt-O-Cu moieties, which modulates the d-band structure of atomic Pt sites, and strengthens the adsorption and activation of reactants. The positively charged Pt atoms are superior for activating acetone at low temperatures, and the stretched Cu-O bonds facilitate the activation of lattice oxygen atoms to participate in subsequent oxidation. We believe that this work will guide researchers to engineer efficient SACs for application in hydrocarbon oxidation reactions.
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