Carbon‐Doped BN Nanosheets for the Oxidative Dehydrogenation of Ethylbenzene

Carbon‐based catalysts have demonstrated great potential for the aerobic oxidative dehydrogenation reaction (ODH). However, its widespread application is retarded by the unavoidable deactivation owing to the appearance of coking or combustion under ODH conditions. The synthesis and characterization...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-07, Vol.56 (28), p.8231-8235
Main Authors: Guo, Fangsong, Yang, Pengju, Pan, Zhiming, Cao, Xu‐Ning, Xie, Zailai, Wang, Xinchen
Format: Article
Language:English
Subjects:
borocarbonitrides
carbocatalysis
Carbon
Catalysts
Chemical synthesis
Coke
Coking
Combustion
Covalence
Deactivation
Dehydrogenation
Ethylbenzene
Graphene
Hybridization
microporous materials
Nanosheets
Oxidation
Oxidation resistance
oxidative dehydrogenation
Selectivity
Structural analysis
Styrene
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Summary:Carbon‐based catalysts have demonstrated great potential for the aerobic oxidative dehydrogenation reaction (ODH). However, its widespread application is retarded by the unavoidable deactivation owing to the appearance of coking or combustion under ODH conditions. The synthesis and characterization of porous structure of BCN nanosheets as well as their application as a novel catalyst for ODH is reported. Such BCN nanosheets consist of hybridized, randomly distributed domains of h‐BN and C phases, where C, B, and N were confirmed to covalent bond in the graphene‐like layers. Our studies reveal that BCN exhibits both high activity and selectivity in oxidative dehydrogenation of ethylbenzene to styrene, as well as excellent oxidation resistance. The discovery of such a simple chemical process to synthesize highly active BCN allows the possibility of carbocatalysis to be explored. The porous structure of two‐dimension BCN nanosheets, consisting of hybridized h‐BN and C domains, were constructed for aerobic oxidative dehydrogenation reactions. The high porosity, novel pore structure, and abundant oxygen‐containing functional groups endow the BCN with more active sites.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201703789