热催化CO_(2)加氢制乙醇的研究进展  

Progress in the thermo-catalytic hydrogenation of CO_(2) to ethanol

作　　者：毛瑀中 查飞[1] 田海锋[1] 唐小华[1] 常玥[1] 郭效军[1] MAO Yu-zhong;ZHA Fei;TIAN Hai-feng;TANG Xiao-hua;CHANG Yue;GUO Xiao-jun(College of Chemistry&Chemical Engineering,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《燃料化学学报（中英文）》2023年第10期1514-1528,共15页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(22268039,21865031)资助。

摘　　要：CO_(2)的化学转化作为碳减排的有效手段受到了广泛关注,近年来,通过热催化工艺将CO_(2)加氢转化为乙醇已经取得了突破性的进展,但仍然存在乙醇选择性及产率低、副产物较多等问题。本工作对热催化CO_(2)加氢制取乙醇的研究进展进行了综述,主要评述了以分子筛、金属氧化物、钙钛矿、二氧化硅、有机框架及金属碳化物等为载体的催化剂应用,分析了不同金属间的协同作用对CO_(2)转化过程的影响以及各类活性物种的介入对于CO_(2)加氢制取乙醇反应的促进作用,总结出能够有效促进C–C键偶联以及CO_(2)吸附和活化的催化剂体系。在此基础上分析了影响CO_(2)加氢制取乙醇的各种因素,并对反应机理进行了讨论。该综述为CO_(2)加氢制备乙醇的催化剂设计、合成工艺条件优化以及催化机理的探究提供参考。The chemical conversion of CO_(2) is considered as one of the effective measures to reduce carbon emission,where breakthroughs have been made in the thermo-catalytic hydrogenation of CO_(2) to ethanol in recent years.However,the synthesis of ethanol from CO_(2) still suffers from some problems such as low ethanol yield and abundant by-products.In this paper,the research progress made in the thermo-catalytic hydrogenation of CO_(2) to ethanol was reviewed.The performance of various catalysts with zeolites,metal oxides,perovskites,silica,organic frameworks and carbon-based materials as the support was evaluated and the synergistic effect of different metals on the CO_(2) conversion and the intervention of various active species on the reaction were analyzed.Accordingly,the catalyst systems that can effectively promote the adsorption and activation of CO_(2) and the coupling of C–C bond were summarized.Finally,the appropriate conditions as well as possible reaction mechanism for the CO_(2) hydrogenation to ethanol were proposed.The insight shown in this paper should be beneficial to designing efficient catalysts,optimizing the reaction conditions and understanding the mechanism of CO_(2) hydrogenation to ethanol in the future.

关 键 词：二氧化碳加氢 乙醇 催化剂 反应机理 

分 类 号：TQ426.94[化学工程] O643.32[理学—物理化学]