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Boron Nitride Nanosheet Supported Pt/Cu cluster as High-Efficiency Catalyst for Propane Dehydrogenation

Abstract

Minimizing platinum usage while maximizing its catalytic activity is attractive but challenging in the development of industrially important platinum catalyst. Herein, by using a hexagonal boron nitride (h-BN) nanosheet supported Pt/Cu cluster catalyst, we report a promotion on platinum utilization efficiency and catalytic performance in propane dehydrogenation. Specifically, as little as 100 ppm platinum exhibits high propane conversion (~15%) and propylene selectivity (>99%) at a relatively low reaction temperature (520 C); and the formation rate of propylene reaches 7.3 mol molPt-1 s-1, which is about 10 times higher than the best value of the reported Pt/Cu single-atom alloy catalyst. Structural analysis reveals that abundant fault edges of h-BN nanosheet and strong bonding of copper with edge B-O defect maintain a unique geometry of Pt/Cu cluster, together with metallic platinum ensemble stabilizing on the top layer of copper cluster, leading to remarkable improvement on catalytic efficiency. Such a prominent promotion in catalytic efficacy also is exemplified using other supports including Al2O3, SBA-15 and SiC as counterparts.

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Supplementary files

Article information


Submitted
14 Nov 2019
Accepted
24 Dec 2019
First published
26 Dec 2019

Catal. Sci. Technol., 2020, Accepted Manuscript
Article type
Paper

Boron Nitride Nanosheet Supported Pt/Cu cluster as High-Efficiency Catalyst for Propane Dehydrogenation

L. Wang, Y. Wang, C. Zhang, J. Wen, X. Weng and L. Shi, Catal. Sci. Technol., 2020, Accepted Manuscript , DOI: 10.1039/C9CY02313E

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