摘要
逆水煤气变换(RWGS)反应,通过催化二氧化碳与氢气的反应,成为生成甲醇、低碳烯烃、芳烃、汽油等高附加值化学品和燃料的关键步骤.深入剖析了 RWGS反应的两大机理:氧化还原机理和中间体机理.同时,对近年来RWGS反应的研究进展进行了详细综述,对应用于该反应的催化剂进行了系统的分类、分析和总结.这些催化剂涵盖了负载型金属催化剂、氧化物催化剂(混合氧化物、尖晶石和钙钛矿)及碳化物催化剂.此外,还对RWGS的工业应用进行了分析,并对RWGS反应的发展进行了展望.RWGS可耦合石脑油脱氢芳构化技术、乙苯脱氢制备苯乙烯技术、低碳烷烃脱氢制烯烃技术、二氧化碳捕集技术及合成电子燃料技术等实现二氧化碳资源化利用.这不仅为开发制备新型RWGS反应催化剂提供了理论依据和指导,也为未来RWGS反应的应用场景提供了可行的思路和参考.
Abstract
The Reverse Water-Gas Shift(RWGS)reaction,facilitated by the catalytic reaction between carbon dioxide and hydrogen,has become a crucial step in the production of high-value chemicals and fuels such as methanol,low-carbon ole-fins,aromatics,and gasoline.This review presents an in-depth analysis of the two primary mechanisms of the RWGS reac-tion:the redox mechanism and the intermediate mechanism.Additionally,recent advancements in RWGS research were comprehensively reviewed,the catalysts employed in this reaction were systematically categorized,analyzed,and summa-rized.These catalysts encompassed supported metal catalysts,oxide catalysts(including mixed oxides,spinels,and perovskites),and carbide catalysts.Moreover,the industrial applications of the RWGS reaction was analyzed and its future development was prospected.RWGS reaction could serve as an efficient method for integrating technologies like naphtha de-hydroaromatization,ethylbenzene dehydrogenation for styrene production,low-carbon alkane dehydrogenation for olefin pro-duction,carbon dioxide capture,and synthetic electronic fuel production to realize efficient utilization of CO2.It not only pro-vided theoretical basis and guidance for developing new RWGS reaction catalysts but also offered feasible ideas and refer-ences for the future application scenarios of the RWGS reaction.
维普
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