Rh-loaded High-entropy Oxide for Efficiently Catalyzing the Reverse Water-Gas Shift Reaction  

作　　者：WANG Ke ZHANG Rui WANG Huilin ZHANG Lingling WANG Zijian WANG Xiao SONG Shuyan ZHANG Hongjie 

机构地区：[1]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,P.R.China [2]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,P.R.China [3]Department of Chemistry,Tsinghua University,Beijing 100084,P.R.China

出　　处：《Chemical Research in Chinese Universities》2024年第6期970-977,共8页高等学校化学研究（英文版）

基　　金：supported by the National Science and Technology Major Project of China(No.2021YFB3500700);the National Natural Science Foundation of China(Nos.22020102003,22025506,22271274);the Program of Science and Technology Development Plan of Jilin Province,China(Nos.20230101035JC,20230101022JC).

摘　　要：Establishing efficient CO_(2) hydrogenation technology based on the reverse water-gas shift (RWGS) reaction can effectively alleviate environmental problems while providing high-value-added products.The development of suitable advanced supports is the key to improving the catalytic activity and selectivity.Herein,we designed and synthesized a new type of spinel-phase high entropy oxides [(FeCrMnAlGa)3O4-x,FMG],which exhibited remarkable RWGS performance after loading small-size Rh nanoparticles.The CO yield was as high as 145.5 μmolCO·gcat^(-1)·s^(-1) at 380 ℃ and the CO selectivity was nearly 100%.Moreover,the catalyst retained over 95% of the initial activity after 25 h of continuous catalyzing.Experimental and structural studies reveal that the FMG support has elemental synergy and high-entropy stability,which affect the Rh dispersion and oxygen vacancy generation,in turn achieving superior catalytic performance.

关 键 词：High entropy oxide(HEO) Reverse water-gas shift(RWGS) Size effect Elemental synergy 

分 类 号：O64[理学—物理化学]