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Date of Publication:2021-01-01

Journal:Huagong Jinzhan/Chemical Industry and Engineering Progress

Volume:40

Issue:4

Page Number:1883-1892

ISSN No.:1000-6613

Abstract:The recent discovery of boron-based catalytic system, especially represented by boron nitride catalyst, exhibits high activity and selectivity to olefins with negligible formation of CO2 in oxidative dehydrogenation of light alkane reactions and has become a new hotspot worldwide. Herein, the recent progress of boron-based materials in oxidative dehydrogenation of light alkanes was summarized. The effects of different boron-based catalysts, such as hexagonal boron nitride, silicon boride, boron carbide, and elemental boron, were clarified. Combining the evidence of spectrum (IR, XPS, NMR, SVUV-PIMS, etc.) and kinetics (partial pressure, kinetic isotope effect, isotope labeling, etc.) and theoretical calculation, the active sites of boron-based catalysts, namely the surface of the tricoordinated boroxol species (B-OH/B-O) and the reaction mechanism containing surface and gas-phase radical reaction were highlighted. The opportunities and the challenges of using boron-based materials in oxidative dehydrogenation of light alkanes were summarized. It indicates that the design of the boron-based materials with highly promoted olefin selectivity is the main topic in further researches. Several suggestions were proposed for the rational design and practical application of boron-based catalytic materials. © 2021, Chemical Industry Press Co., Ltd. All right reserved.

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