Promoted reverse water-gas shift activity on transition metals-incorporated iron-cerium oxide solid solution catalyst
作者机构：College of Engineering and Applied Sciences National Laboratory of Solid State Microstructures The Frontiers Science Center for Critical Earth Material Cycling Nanjing University
出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期：2024年第34卷第4期
页 面：676-681页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术]
基 金：supported by the National Key R&D Program of China(No. 2020YFA0406102) the National Natural Science Foundation of China (grant number 22272078) the Frontiers Science Center for Critical Earth Material Cycling of Nanjing University the “Innovation and Entrepreneurship of Talents plan” of Jiangsu Province Program for Innovative Talents and Entrepreneurs in Jiangsu (JSSCTD202138)
主 题：Ceria Iron-based catalyst Reverse water-gas shift reaction Solid solution Transition metal doping
摘 要：Earth-abundant Fe oxide-based catalysts, renowned for their broad-spectrum light absorption, hold promise for driving the photothermal RWGS reaction—a promising strategy for converting CO2emissions into valuable carbonaceous feedstocks. However, traditional Fe oxide-based catalysts exhibit limited activity due to their constrained H2dissociation and CO2activation capabilities, especially at lower temperatures. This study introduces Co, Ni, and Cu-doped Ce0.7Fe0.3O2solid-solution catalysts. Incorporation of Fe into CeO2enhances CO2dissociation while preserving extensive light adsorption up to 2500 nm. Notably, Co doping enhances H2dissociation and promotes CO2activation. Subsequent investigations reveal that a catalyst doped with 5 mol% Co exhibits the highest photothermal catalytic activity, attaining a ～50 % CO2conversion under 300 W Xe-lamp irradiation with excellent selectivity and stability over 10 reaction cycles spanning 10 h. These results underscore the potential of designing CeO2-based solid solution catalysts with synergistic metal dopants for efficient and selective CO2conversion under moderate conditions.
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