Promoted reverse water-gas shift activity on transition metals-incorporated iron-cerium oxide solid solution catalyst  

作　　者：Yi Xie Wenhao Qin Linyu Wang Yueren Liu Haoyang Jiang Miao Zhong 

机构地区：[1]College of Engineering and Applied Sciences,National Laboratory of Solid State Microstructures,The Frontiers Science Center for Critical Earth Material Cycling,Nanjing University,Nanjing,210023,China

出　　处：《Progress in Natural Science:Materials International》2024年第4期676-681,共6页自然科学进展·国际材料(英文版)

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)

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 CO_(2)emissions into valuable carbonaceous feedstocks.However,traditional Fe oxide-based catalysts exhibit limited activity due to their constrained H_(2)dissociation and CO_(2)activation capabilities,especially at lower temperatures.This study introduces Co,Ni,and Cu-doped Ce_(0.7)Fe_(0.3)O_(2)solid-solution catalysts.Incorporation of Fe into CeO_(2)enhances CO_(2)dissociation while preserving extensive light adsorption up to 2500 nm.Notably,Co doping enhances H_(2)dissociation and promotes CO_(2)activation.Subsequent investigations reveal that a catalyst doped with 5 mol%Co exhibits the highest photothermal catalytic activity,attaining a~50%CO_(2)conversion 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 CeO_(2)-based solid solution catalysts with synergistic metal dopants for efficient and selective CO_(2)conversion under moderate conditions.

关 键 词：Reverse water-gas shift reaction Solid solution CERIA Iron-based catalyst Transition metal doping 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]