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Overcoming Limitations in the Strong Interaction between Pt and Irreducible SiO 2 Enables Efficient and Selective Hydrogenation of Anthracene
Interactions between metals and oxide supports are crucial in determining catalytic activity, selectivity, and stability. For reducible oxide supported noble metals, a strong metal-support interaction (SMSI) has been widely recognized. Herein we report the intermediate selectivity and stability over...
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Published in: | ACS applied materials & interfaces 2022-01, Vol.14 (1), p.590-602 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Interactions between metals and oxide supports are crucial in determining catalytic activity, selectivity, and stability. For reducible oxide supported noble metals, a strong metal-support interaction (SMSI) has been widely recognized. Herein we report the intermediate selectivity and stability over an irreducible SiO
supported Pt catalyst in the hydrogenation of anthracene that are significantly boosted due to the SMSI-induced formation of intermetallic Pt silicide and Pt-SiO
interface. The limitation in the strong interaction between Pt nanoparticles and irreducible SiO
has been breached by combining the strong electrostatic adsorption method and following the high temperature reduction strategy. Due to the isolated Pt active sites by Si atoms, the activated H species produced over the Pt
Si/SiO
catalyst with an initial catalytic activity of 2.49 μmol/(m
/g)/h as well as TOF of 0.95 s
preferentially transfer to the outer ring of anthracene to 87% yield of symmetric octahydroanthracene (
-OHA) by subsequent hydrogenation. In addition, the Pt
Si/SiO
catalyst presents an excellent stability after five cycles, which can be attributed to the fact that intermetallic Pt
Si nanoparticles are anchored firmly onto the surface of the SiO
support. The discovery contributes to broaden the horizons on the SMSI effect in the irreducible oxide supported metal particle catalysts and provides guidance to design the metal-SiO
interface and tune the surface chemical properties in diverse application conditions. |
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ISSN: | 1944-8244 1944-8252 |
DOI: | 10.1021/acsami.1c16965 |