绿色催化剂在CO_(2)合成环状碳酸酯中的研究应用  

Research and application of green catalyst in CO_(2) conversion

作　　者：方清 支云飞 陕绍云[1] 胡天丁 缪应菊 邹冉 Fang Qing;Zhi Yunfei;Shan Shaoyun;Hu Tingding;Miao Yingju;Zou Ran(College of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500;College of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui 710021)

机构地区：[1]昆明理工大学化工学院,昆明650500 [2]六盘水师范学院化学与材料工程学院,六盘水710021

出　　处：《化工新型材料》2022年第5期53-57,共5页New Chemical Materials

基　　金：国家自然科学基金(21766016);云南省“万人计划”基金(YNWR-QNBJ-2018-198);昆明市科学技术局科技计划基金(2019-1-G-25318000003480);倪永浩院士工作站(2019IC002)。

摘　　要：为缓解CO_(2)导致的温室效应,近年来有关CO_(2)的捕集与转化的研究成为热点。以CO_(2)为原料,与环氧化物经环加成反应,可转化为具有较高商业价值的环状碳酸酯。但由于CO_(2)在动力学和热力学上较稳定,所以高效催化剂对环加成反应至关重要。但该体系中大部分催化剂存在难以循环利用、污染环境、条件不温和等问题。综述了具有环保、催化活性高、成本较低、循环使用次数多等优点的绿色催化剂,如离子液体、N-杂环卡宾和石墨氮化碳等。探究其在CO_(2)环加成中的反应机理,发现羟基、氨基、羧基形成的氢键供体与卤素离子产生的协同作用,对环氧化物的活化和开环有着不可或缺的作用。最后提出部分绿色催化剂目前在CO_(2)环加成反应中存在的问题,以期为CO_(2)的循环利用提供指导。Nowadays,capture and conversion of CO_(2) have become a hot topic due to the greenhouse effect caused by CO_(2).The cyclic carbonate which is prepared through the cycloaddition reaction of CO_(2) with epoxide has high commercial value.However,the efficient catalyst is vital for the cycloaddition reaction because CO_(2) is stable on kinetics and thermodynamics.There are still a lot of problems exist in this catalyst system,such as difficult to recycle,environmental pollution,and harsh conditions.Therefore,the green catalysts,such as ionic liquid,N-heterocyclic carbeneand graphite carbon nitride,with the virtues of environmental protection,high catalytic activity,low cost,and high cycle times were reviewed,and studied the mechanism of the cycloaddition reaction of CO_(2) with epoxide.The synergistic effect,which was indispensable for the activation and ring opening of epoxides,between the hydrogen bond donors of hydroxyl,carboxyl,amino and halide ions was found.For the purpose providing guidance for the recycling of CO_(2),put forward some of the current problems of green catalysts.

关 键 词：绿色催化剂 二氧化碳 离子液体 纤维素 石墨氮化碳 

分 类 号：O643.36[理学—物理化学]