Improved activity of Ni/MgAl_2O_4 for CO_2 methanation by the plasma decomposition

查看全文 作　　者：Zhigang [1]Fan;Kaihang [1]Sun;Ning [1]Rui;Binran [1,2]Zhao;Chang-jun [1]Liu

机构地区：[1]Tianjin Co-Innovation Center of Chemical Science & Engineering, School of Chemical Engineering and Technology, Tianjin University;[2]School of Chemical Engineering, Northwest University

出　　处：《Journal of Energy Chemistry》索引2015年第24卷第5期,共5页

基　　金：supported by the National Natural Science Foundation of China(under contracts#21476157 and#21406177) 摘　　要：CO2 methanation has been a hot topic because of its important application in the spacecraft and potential utilization of carbon dioxide. Nickel catalyst is active for this reaction. However, its activity still needs to be improved. Dielectric barrier discharge(DBD) plasma, initiated at ambient condition and operated at ~150 °C,has been employed in this work for decomposition of nickel precursor to prepare Ni/Mg Al2O4. The plasma decomposition results in high dispersion, unique structure, enhanced reducibility of Ni particles and promoted catalyst-support interaction. An improved activity of CO2 methanation with a higher yield of methane has been achieved over the plasma decomposed catalyst, compared to the catalyst prepared thermally. For example, the methane yield of the plasma prepared catalyst is 71.8% at 300 °C but it is 62.9% over the thermal prepared catalyst. The catalyst characterization confirmed that CO2 methanation over the DBD plasma prepared catalyst follows pathway of CO methanation. 关键词：甲烷化反应分解催化剂等离子体二氧化碳镍催化剂介质阻挡放电甲烷化催化剂催化剂载体

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Improved activity of Ni/MgAl_2O_4 for CO_2 methanation by the plasma decomposition

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