Exploring catalyst developments in heterogeneous CO_(2) hydrogenation to methanol and ethanol:A journey through reaction pathways  

作　　者：Rasoul Salami Yimin Zeng Xue Han Sohrab Rohani Ying Zheng 

机构地区：[1]Department of Chemical and Biochemical Engineering,Western University,London N6A 5B9,ON,Canada [2]Canmet MATERIALS,Natural Resources Canada,Hamilton L8P OA5,ON,Canada

出　　处：《Journal of Energy Chemistry》2025年第2期345-384,I0008,共41页能源化学(英文版)

基　　金：the Canadian NRCan OERD Energy Innovation Program;the Natural Sciences and Engineering Research Council of Canada,and the Carbon Solution Program for their financial support.

摘　　要：The pursuit of alternative fuel generation technologies has gained momentum due to the diminishing reserves of fossil fuels and global warming from increased CO_(2)emission.Among the proposed methods,the hydrogenation of CO_(2)to produce marketable carbon-based products like methanol and ethanol is a practical approach that offers great potential to reduce CO_(2)emissions.Although significant volumes of methanol are currently produced from CO_(2),developing highly efficient and stable catalysts is crucial for further enhancing conversion and selectivity,thereby reducing process costs.An in-depth examination of the differences and similarities in the reaction pathways for methanol and ethanol production highlights the key factors that drive C-C coupling.Identifying these factors guides us toward developing more effective catalysts for ethanol synthesis.In this paper,we explore how different catalysts,through the production of various intermediates,can initiate the synthesis of methanol or ethanol.The catalytic mechanisms proposed by spectroscopic techniques and theoretical calculations,including operando X-ray methods,FTIR analysis,and DFT calculations,are summarized and presented.The following discussion explores the structural properties and composition of catalysts that influence C-C coupling and optimize the conversion rate of CO_(2)into ethanol.Lastly,the review examines recent catalysts employed for selective methanol and ethanol production,focusing on single-atom catalysts.

关 键 词：CO_(2)hydrogenation METHANOL ETHANOL Catalytic mechanism Operando techniques Single atom catalyst Tandem catalyst 

分 类 号：TQ223.12[化学工程—有机化工] O643.36[理学—物理化学]