文献类型：期刊文献

英文题名：Insight into the synergistic effect of copper and sodium over metal organic framework-derived Fe-based catalyst for CO2 hydrogenation to aromatics

作者：Chen, Chonghao[1];Song, Guiyao[1];Wang, Zihao[1];Song, Jianhua[1];Jiang, Qisheng[1];Zhai, Yangzhou[1];Liu, Dianhua[1]

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

年份：2024

卷号：341

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20234014836944);WOS:【SCI-EXPANDED(收录号:WOS:001098936800001)】；

基金：This work was supported by the National Key R & D Program of China (2017YFB0602204) .

语种：英文

外文关键词：CO 2 hydrogenation; Aromatics; Fe-based catalyst; Na-Cu synergy

摘要：One-step hydrogenation of carbon dioxide (CO2) to aromatics is a promising strategy for relieving the stress of fossil fuels. Here, a copper and sodium co-modified Fe-based catalyst (3-NFC-5) was synthesized through the pyrolysis of Cu-doped MIL-101(Fe) and Na impregnation. After combining with HZSM-5, 42.11% CO2 conversion and 50.68% total aromatics selectivity was achieved. Through multiple characterization and DFT calculations, the synergistic promotion of Na and Cu on light olefins intermediate production was revealed. Na was crucial for COOH* formation as the intermediate for reverse water gas shift reaction (RWGS), whose concentration could be further enhanced after Cu modification. Controlled C-C coupling towards C2-C4 hydrocarbons was realized by the enhanced CO non-dissociative activation and the increased content of chi-Fe5C2 after Cu doping, which was responsible for the inhibited surface CHx* concentration and selective production of light olefins, respectively.