Boron nitride for enhanced oxidative dehydrogenation of ethylbenzene  

作　　者：Rui Han Jiangyong Diao Sonu Kumar Andrey Lyalin Tetsuya Taketsugu Gilberto Casillas Christopher Richardson Feng Liu Chang Won Yoon Hongyang Liu Xudong Sun Zhenguo Huang 

机构地区：[1]Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110819,Liaoning,China [2]School of Civil and Environmental Engineering,University of Technology Sydney,Ultimo,New South Wales 2007,Australia [3]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China [4]Institute for Chemical Reaction Design and Discovery(WPI-ICReDD),Hokkaido University,Sapporo 001-0021,Japan [5]Center for Green Research on Energy and Environmental Materials,National Institute for Materials Science(NIMS),Tsukuba 305-0044,Japan [6]Department of Chemistry,Faculty of Science,Hokkaido University,Sapporo 060-0810,Japan [7]Electron Microscopy Centre,University of Wollongong,New South Wales 2500,Australia [8]Molecular Horizons and School of Chemistry and Molecular Bioscience,Faculty of Science,Medicine and Health,University of Wollongong,New South Wales 2522,Australia [9]Center for Hydrogen and Fuel Cell Research,Korea Institute of Science and Technology,Seoul 02792,Republic of Korea

出　　处：《Journal of Energy Chemistry》2021年第6期477-484,I0012,共9页能源化学（英文版）

基　　金：support under the Australian Research Council’s Discovery Projects funding scheme(project number DP170101773);support from Alexander von Humboldt Foundation.T.T.;financial support from the program of the Ministry of Education,Culture,Sports,Science,and Technology(MEXT,Japan)“Priority Issue on Post-K computer”(Development of new fundamental technologies for high-efficiency energy creation,conversion/storage and use);support from the Ministry of Science and Technology(2016YFA0204100);the National Natural Science Foundation of China(21961160722,91845201,21573254);the Liaoning Revitalization Talents Program XLYC1907055。

摘　　要：It is demonstrated experimentally and confirmed theoretically that highly defective boron nitride showed outstanding performance for oxidative dehydrogenation of ethylbenzene.The catalyst is derived from carbon-doped hexagonal boron nitride nanosheets synthesized via a two-step reaction when participating the oxidative dehydrogenation reaction.The first step yields a polymeric precursor with the atomic positions of B,C,N relatively constrained,which is conducive for the formation of carbon atomic clusters uniformly dispersed throughout the BN framework.During the oxidative dehydrogenation of ethylbenzene to styrene,the nanoscale carbon clusters are removed and highly defective boron nitride(D-BN)is obtained,exposing boron-rich zigzag edges of BN that act as the catalytic sites.The catalytic performance of D-BN is therefore remarkably better than un-doped h-BN.Our results indicate that dispersed C-doping in h-BN is highly effective in terms of defect formation and resultant enhanced activity in oxidative dehydrogenation reactions.

关 键 词：Boron nitride DEHYDROGENATION ETHYLBENZENE Carbon-doping Heterogeneous catalysis 

分 类 号：TQ241.21[化学工程—有机化工] TQ426