热催化CO2加氢制甲醇具有显著的减碳效应,能够有效储存可再生能源,具有广阔的工业应用前景.介绍了 CO2加氢制甲醇的反应网络及其热力学挑战,并概述了其工艺流程、国内外工业应用情况,系统综述了近年来不同活性组分催化剂的研究进展,从催化剂的制备方式、活性位点、反应机理及动力学等方面阐述Cu基催化剂、贵金属催化剂、氧化物催化剂以及其他新型催化剂存在的问题和优势.重点阐述Cu基催化剂的构效关系,包括其活性组分结构、载体性质和助剂对催化活性和甲醇选择性的影响,并展望CO2加氢制甲醇催化剂的未来发展方向.
Thermal catalysis CO2 hydrogenation to methanol has significant carbon reduction effect,can effectively store renewable energy,and has broad prospects for industrial prospect.In this review,the reaction network for the CO2 hydrogenation to methanol and thermodynamic challenges were introduced,and the process and its industrial applications at domestic and abroad were summarized.Then the research progress on the catalysts with different active components in recent years was reviewed from the aspects of preparation method,the active sites,reaction mechanism and kinetics in terms of problems and advantages.The structure-activity relationship of copper-based catalysts,including the effects of the active components,support and additives on the activity and methanol selectivity,was emphatically described.A prospect was finally presented for the catalyst development in the future.