Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 35, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202201453
Keywords
Gallium Oxide; Platinum; Propane Dehydrogenation; Synergistic Effect
Categories
Funding
- National Key R&D Program of China [2021YFA1501302]
- National Science Foundation of China [22121004, U1862207]
- Haihe Laboratory of Sustainable Chemical Transformations [CYZC202107]
- Program of Introducing Talents of Discipline to Universities [BP0618007]
- XPLORER PRIZE
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The synergy between metals and metal oxides effectively improves the propane dehydrogenation process. The presence of Pt in Pt-GaOx promotes the activation of C-H bonds in propane. Under optimal conditions, the relative propylene formation rate of Pt-GaOx with 0.03 wt% Pt exceeds 25% of the summed contribution of individual components.
The synergy between metals and metal oxides can effectively improve the heterogeneous catalytic process. This paper describes the intrinsic effect of Pt modification over GaOx (Pt-GaOx) on propane dehydrogenation. The presence of Pt promotes H-2 dissociation and surface coverage of hydrogen species, which is beneficial for the activation of C-H in propane. With excessive Pt, Ga delta+ can be further reduced to form Pt-Ga alloy with less surface hydrogen species. Consequently, the relative propylene formation rate between Pt-GaOx and the summed contribution of individual Pt and GaOx increases linearly with the content of hydrogen species. Optimally, the relative propylene formation rate of Pt-GaOx with 0.03 wt % Pt exceeds 25 % of the summed contribution of individual components.
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