文献类型：期刊文献

英文题名：K-Loaded FeZn+HZSM-5 Composite Catalyst: Rational Design for Selective Hydrogenation of CO2 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] Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, School of Chemical Engineering, Carbon Neutral Joint Laboratory of East China University of Science and Technology-Shenergy Co Ltd., East China University of Science and Technology, Shanghai, 200237, China

年份：2026

卷号：65

期号：30

起止页码：15942

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20263221272687);Scopus(收录号：2-s2.0-105046798857)

语种：英文

外文关键词：Aromatization - Binary alloys - Carbon dioxide - Catalyst activity - Hydrogenation - Iron alloys - Iron oxides - Mass transfer - Structural optimization

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. ? 2026 American Chemical Society