Well-dispersed Mn/g-C_(3)N_(4)as bifunctional catalysts for selective epoxidation of olefins and carbon dioxide cycloaddition  

作　　者：Minxing Du Yuxia Sun Jiaojiao Zhao Haiyan Hu Liwei Sun Yuehui Li 

机构地区：[1]State Key Laboratory for Oxo Synthesis and Selective Oxidation,Suzhou Research Institute of LICP,Center for Excellence in Molecular Synthesis,Lanzhou Institute of Chemical Physics(LICP),Chinese Academy of Sciences,Lanzhou 730000,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Chemical Letters》2023年第12期150-154,共5页中国化学快报（英文版）

基　　金：financial supports from the National Natural Science Foundation of China(Nos.216330133and 22102197);Jiangsu Province Natural Science Foundation(No.BK20211096);the Science Fund of Shandong Laboratory of Advanced Materials and Green Manufacturing(Yantai,No.AMGM2021F07).

摘　　要：Epoxidation is an important chemical process for the production of epoxides,key building blocks in chemical industry.Despite great efforts being made to facilitate this process,it remains a significant challenge to develop cost-effective,environmental-friendly,and selective catalysts.Herein,we reported a highly dispersed Mn supported by g-C_(3)N_(4)(Mn/g-C_(3)N_(4))with Mn loading up to 2.56 wt%.The Mn/g-CN_(4)exhibited satisfied catalytic performance for olefin epoxidation with excellent conversion(91%),high selectivity(93%)as well as outstanding recycling stability.Further analysis revealed the importance of Mn-N structure for the generation of active oxo-containing species and subsequent oxygen atom transfer.Besides,an efficient synthesis of cyclic carbonates from styrene epoxide and CO_(2)has been achieved(88%conversion,89%selectivity)based on the polar Mn-N coordinated characteristics of Mn/g-C_(3)N_(4)catalyst.

关 键 词：Well-dispersed Mn catalyst Bifunctional catalyst EPOXIDATION CO_(2) CYCLOADDITION 

分 类 号：O643.36[理学—物理化学]