Efficient CO2 to CO conversion at moderate temperatures enabled by the cobalt and copper co-doped ferrite oxygen carrier

查看全文 作　　者：Yu [1]Qiu;Li [1]Ma;Dewang [1]Zeng;Min [1]Li;Dongxu [1]Cui;Yulin [1]Lv;Shuai [1]Zhang;Rui [1]Xiao

机构地区：[1]Key Laboratory of Energy Thermal conversion and control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China

出　　处：《Journal of Energy Chemistry》索引2020年第29卷第7期,共11页

基　　金：National Natural Science Foundation of China(Grant No.51706041);the National Natural Science Foundation of China(NSFC)Projects(Grant No.51661145011);the National Science Foundation for Distinguished Young Scholars of China(Grant No.51525601)。 摘　　要：Chemical looping technology holds great potential on efficient CO2 splitting with much higher CO production and CO2 splitting rate than photocatalytic processes.Conventional oxygen carrier requires high temperature(typically 850–1000°C)to ensure sufficient redox activity,but the stable and high CO2 conversion is favored at a lower temperature,leading to the degrading on the reaction kinetics as well as the low CO production and CO2 splitting rate.In this paper,we prepared several ternary spinels and demonstrated their performance for chemical looping CO2 splitting at moderate temperatures.Using the promotion effect of Cu to cobalt ferrite reduction and reversible phase change of the reduced metals,Cu0.4 Co0.6 Fe2 O4 exhibits high CO2 splitting rate(144.6μmol g–1 min–1)and total CO production(9100μmol g–1)at 650°C.The high performance of this earth-abundant spinel material is also consistent in repeated redox cycles,enabling their potential in industrial use. 关键词：Chemical looping Oxygen carrier CO2 splitting FERRITE

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Efficient CO2 to CO conversion at moderate temperatures enabled by the cobalt and copper co-doped ferrite oxygen carrier

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