二氧化碳加氢制甲醇过程中铜基催化剂活性位点研究进展

Research progress on active sites in Cu-based catalysts for CO_(2) hydrogenation to methanol

二氧化碳加氢制甲醇反应研究对解决能源紧缺和环境问题具有重要意义。以Cu/ZnO/Al_(2)O_(3)为代表的铜基催化剂因其反应活性高、成本低廉而备受关注,受限于催化剂中Cu物种的电子结构多样性与表征技术的发展水平,铜基催化剂的真实活性位点、反应机理尚不清楚。本文综述了二氧化碳加氢制甲醇过程中铜基催化剂活性位点的研究进展,并结合原位表征技术的研究进展对其反应机理进行综述。研究人员结合多种先进表征手段确定了活性位点的结构和组成,同时揭示了不同催化剂结构对反应性能的影响。通过原位表征技术的应用,可以实时观察反应过程中催化剂的结构变化,揭示了反应关键步骤和催化剂的作用方式。未来可以结合更多原位表征技术和计算模拟方法,探索催化剂微观结构和反应机理,以更高的反应性能制备绿色甲醇。

The study of carbon dioxide hydrogenation to methanol reaction holds significant importance in addressing energy shortages and environmental issues.Copper-based catalysts,such as Cu/ZnO/Al_(2)O_(3),have attracted great attention due to their high reactivity and low cost.However,limited by the electronic structure diversity of the Cu species in the catalysts and insufficient characterization techniques,the true active sites and reaction mechanisms of the Cu-based catalysts are still unclear.This paper reviews the research progress on the active sites of copper-based catalysts for the hydrogenation of carbon dioxide to methanol,and the reaction mechanism in conjunction with the research progress of in-situ characterization techniques.By combining various advanced characterization techniques,researchers determined the structure and composition of the active sites,as well as reveals the effects of different catalyst structures on the reaction performance.Through the application of in-situ characterization techniques,the structural changes of catalysts during the reaction process can be observed in real-time,revealing the key steps of the reaction and the action mode of catalysts.In the future,more in-situ characterization techniques and computational simulation methods can be combined to explore the catalyst microstructure and reaction mechanism to prepare green methanol with better reaction performance.