文献类型：期刊文献

英文题名：K-LoadedFeZn+HZSM-5 Composite Catalyst:Rational Design for Selective Hydrogenation of CO to Aromatics

作者：Xiao, Shuang[1];He, Muqian[1];Wang, Xuguang[1];Liu, Huiling[1];Liu, Yaxin[1];Liu, Dianhua[1]

机构：[1]East China Univ Sci & Technol, Carbon Neutral Joint Lab East China Univ Sci & Tec, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ,Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2026

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001830630600001)】；

基金：This work was supported by the National Key Research and Development Program of China (2024YFB4105404), the National Natural Science Foundation of China (22478108), the Science and Technology Commission of Shanghai Municipality (22dz1208400), and the Fundamental Research Funds for the Central Universities (JKCA1241105).

语种：英文

摘要：Direct hydrogenation of CO2 to aromatics is a crucial pathway for carbon utilization but faces challenges in optimizing activity and selectivity. In this study, we developed a 0.10K-FZ+HZ5-1.5 bifunctional composite catalyst system. By regulating the electronic structure and active sites of metal oxides, the pore architecture and acid site distribution of zeolites, and the mixing method and mass ratio of the composite, we enhanced CO2 adsorption and mass transfer efficiency. This significantly promoted the selective conversion of CO2 to aromatics, achieving a conversion of 42.57% and aromatics selectivity of 58.11%, with BTX accounting for 50.49% of the total aromatics. Characterization revealed that potassium acts as an electron donor to the FeZn catalyst, promoting the formation of active phases Fe3O4 and Fe5C2, while TPAOH-modified zeolite optimized acid site distribution and mesoporous structures. Further optimization of the composite's mixing mode and mass ratio improved reaction synergy, enabling balanced advancement of CO2 conversion, C-C coupling, and aromatization. The synergistic optimization of metal oxides and zeolites created an efficient reaction microenvironment, facilitating the selective production of aromatics from CO2.