文献类型：期刊文献

英文题名：Electrochemically modified brass mesh as a structured catalyst for the water-gas shift reaction

作者：Gu, Haoyuan[1];Qiu, Runfa[1];Liu, Qi[1];Jiang, Zhaocong[1];Zhu, Jianhui[1];Sun, Bo[1];Dong, Shengbin[1];Chen, Hecao[1];Zhu, Minghui[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab GreenChem Engn & Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2025

卷号：71

期号：11

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20253419008887);WOS:【SCI-EXPANDED(收录号:WOS:001549983000001)】；

基金：This work was supported by the National Key R&D Program of China (2022YFB3805504), Shanghai Pilot Program for Basic Research (22TQ1400100-7), the Basic Research Program of Science and Technology Commission of Shanghai Municipality (22JC1400600), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：CFD simulation; electrochemical synthesis; in situ characterization; structured catalyst; water-gas shift reaction

摘要：The water-gas shift (WGS) reaction is crucial for industrial H2 production. Cu-ZnO-based catalysts are widely used but suffer from limited stability due to Cu nanoparticles sintering, aggravated by localized hotspots generated during this exothermic reaction. Structured catalysts with high thermal conductivity can improve stability but are hindered by weak adherence of active components. Here, we modified brass mesh via an electrochemical method, allowing active components to grow firmly on the mesh substrate. Al(NO3)3 and/or Ce(NO3)3 solutions were used as electrolytes, with Al3+ promoting uniform electrodeposition and Ce3+ functioning as an electron promoter. The synthesized CuZnAlCe mesh exhibits a WGS reaction rate of 18.0 mu mol g-1 s-1 at 200 degrees C, twice that of the CuZnAl mesh and three times that of the CuZnAlCe powder catalyst. The structured catalyst demonstrates excellent robustness under harsh conditions, including air passivation and high-temperature reactions at 350 degrees C, highlighting its potential for industrial WGS applications.