冠醚基共价三嗪框架促进二氧化碳催化转化为环状碳酸酯  

Crown ether-based covalent triazine frameworks for the catalytic conversion of carbon dioxide into cyclic carbonates

作　　者：陈可炽 罗荣昌 周贤太 Chen Kechi;Luo Rongchang;Zhou Xiantai(School of Light Industry and Chemical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Huizhou Research Institute,Sun Yat-sen University,Huizhou 516081,Guangdong,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510006 [2]中山大学惠州研究院,广东惠州516081

出　　处：《工业催化》2023年第10期55-62,共8页Industrial Catalysis

基　　金：国家自然科学基金面上项目(21978056);广东工业大学青年百人计划。

摘　　要：多孔有机聚合物(POPs)一直被视为用于CO_(2)吸附和转化的重要多孔材料,在CO_(2)与环氧化物环加成反应中表现出巨大的潜力。以二苯并-18-冠醚-6为原料,通过醛脒缩合反应在温和条件下制备一种冠醚型共价三嗪框架。当使用KI作为助催化剂时,在无溶剂温和条件下,能够高效且高选择性地将CO_(2)转化为环状碳酸酯,呈现出优异的催化性能和底物普适性。同时,该多相催化剂在循环使用5次后,催化活性未见明显下降,展现出良好的稳定性。Porous organic polymers(POPs)have long been regarded as important porous materials for CO_(2)adsorption and catalytic conversion and had huge application potential in cycloaddition of CO_(2)and epoxides.In this paper,a class of crown ether-functionalized covalent triazine framework was prepared by aldehyde-amidine condensation reaction with dibenzo-18-crown ether-6 under mild conditions.When KI is used as a cocatalyst,it can efficiently and selectively convert CO_(2)to cyclic carbonates under mild conditions without solvent,showing excellent catalytic performance and substrate universality.Finally,this kind of heterogeneous catalyst could be reused for five recycles without obvious decrease in activity,indicating a great potential of industrial application.

关 键 词：催化化学 共价三嗪框架 冠醚 二氧化碳 环状碳酸酯 

分 类 号：O643.3[理学—物理化学] TQ09[理学—化学]