College of Chemistry & Chemical Engineering, Northwest Normal University

CO2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CO2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CO2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CO2转化过程的影响以及各类活性物种的介入对于CO2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CO2吸附和活化的催化剂体系。在此基础上分析了影响CO2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CO2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 CO2 is considered as one of the effective measures to reduce carbon emission, where breakthroughs have been made in the thermo-catalytic hydrogenation of CO2 to ethanol in recent years. However, the synthesis of ethanol from CO2 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 CO2 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 CO2 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 CO2 and the coupling of C–C bond were summarized. Finally, the appropriate conditions as well as possible reaction mechanism for the CO2 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 CO2 hydrogenation to ethanol in the future.

国家自然科学基金 (22268039, 21865031)资助

毛瑀中, 查飞, 田海锋, 唐小华, 常玥, 郭效军. 热催化CO2加氢制乙醇的研究进展[J]. 燃料化学学报（中英文）, 2023, 51(10): 1514-1528.

MAO Yu-zhong, ZHA Fei, TIAN Hai-feng, TANG Xiao-hua, CHANG Yue, GUO Xiao-jun. Progress in the thermo-catalytic hydrogenation of CO2 to ethanol[J]. Journal of Fuel Chemistry and Technology, 2023, 51(10): 1514-1528.