Zonal activation of molecular carbon dioxide and hydrogen over dual sites Ni-Co-MgO catalyst for CO_(2) methanation:Synergistic catalysis of Ni and Co species

作     者：Zonglin Li Jianjun Chen Yu Xie Junjie Wen Huiling Weng Mingxue Wang Jingyi Zhang Jinyan Cao Guocai Tian Qiulin Zhang Ping Ning Zonglin Li;Jianjun Chen;Yu Xie;Junjie Wen;Huiling Weng;Mingxue Wang;Jingyi Zhang;Jinyan Cao;Guocai Tian;Qiulin Zhang;Ping Ning

作者机构：Faculty of Environmental Science and EngineeringKunming University of Science and TechnologyKunming 650500YunnanChina National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical IndustriesKunming University of Science and TechnologyKunming 650500YunnanChina Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第91卷第4期

页      面：213-225页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：funded by the Science and Technology Project of Southwest United Graduate School of Yunnan Province(No.202302AQ370002) the National Natural Science Foundation of China(No.22206066) 

主　　题：Zonal activation CO_(2) methanation Dual active sites Synergistic effect 

摘      要：An in-depth mechanism in zonal activation of CO_(2)and H2molecular over dual-active sites has not been revealed ***,Ni-Co-MgO was rationally constructed to elucidate the CO_(2)methanation *** abundant surface nickel and cobalt components as active sites led to strong Ni-Co interaction with charge transfer from nickel to ***,electron-enriched Coδ-species participated in efficient chemisorption and activation of CO_(2)to generate monodentate ***,plentiful available Ni0sites facilitated H2dissociation,thus CO_(2)and H2were smoothly activated at zones of Coδ-species and Ni0,*** in situ DRIFTS,quasi situ XPS,TPSR,and DFT calculations substantiated a new formate evolution mechanism via monodentate carbonate instead of traditional bidentate carbonate based on synergistic catalysis of Coδ-species and *** zonal activation of CO_(2)and H2by tuning electron behaviors of double-center catalysts can boost heterogeneous catalytic hydrogenation performance.