Single-atom cobalt catalysts for chemoselective hydrogenation of nitroarenes to anilines  

作　　者：Xiaochun Liu Chaoyue Wang Jiaolong Meng Xiaodong Yue Qingyun Wang Jiatian Lu Junke Wang Xicun Wang Yingxiao Zong Xuefeng Jjiang 

机构地区：[1]Gansu Key Laboratory of Polymer Materials,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China [2]Key Laboratory of Hexi Corridor Resources Utilization of Gansu,College of Chemistry and Chemical Engineering,Hexi University,Zhangye 734000,China [3]Shanghai Key Laboratory of Green Chemistry and Chemical Process,Department of Chemistry,East China Normal University,Shanghai 200062,China [4]School of Materials Design&Engineering,Beijing Institute of Fashion Technology,Beijing 100000,China

出　　处：《Chinese Chemical Letters》2023年第12期183-188,共6页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22061017 and 21862006);Science and technology program of Gansu Province(Nos.22YF7GG127 and 23JRRG0002);Hexi University Research Start-up Fund Project(Nos.KYQD2020013).

摘　　要：Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous single-atomic cobalt catalyst with Co-N_(4) active sites was synthesized by using nitrogen-doped graphene derived from acrylonitrile.Single-atomic cobalt was observed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)in [e-mail],the density functional theory(DFT)calculation and the extended X-ray absorption fine structures(EXAFS)fitting results indicate that the coordination structure of Co-N is four-coordinated.In this work,the practical hydrogenation of nitroarenes to anilines enabled by Co@Nx-C-800 was established with excellent yields and selectivity,which proved its advantages and potential applications.

关 键 词：Cobalt catalyst Heterogeneous catalysis Nitro reduction Single-atom catalysts Chemoselective hydrogenation 

分 类 号：O643.36[理学—物理化学] O625.631[理学—化学]