Depleted uranium oxide supported nickel catalyst for autothermal CO_(2)methanation in non-adiabatic reactor under induction heating  

作　　者：Lai Truong-Phuoc Jean-Mario Nhut Loïc Vidal Cuong Duong-Viet Sécou Sall Corinne Petit Christophe Sutter Mehdi Arab Alex Jourdan Cuong Pham-Huu 

机构地区：[1]Institute of Chemistry and Processes for Energy,Environment and Health(ICPEES),ECPM,UMR 7515 CNRS-University of Strasbourg,25 rue Becquerel,67087 Strasbourg Cedex 02,France [2]BlackLeaf SAS,210 rue Geiler de Kaysersberg,67400 Illkirch,France [3]Institute of Materials Science of Mulhouse,IS2M,UMR 7361,Universitéde Haute-Alsace,CNRS,15,rue Jean Starcky-BP 2488,68057 Mulhouse,France [4]ORANO Tricastin,Direction de La Recherche&Développement,Site du TRICASTIN BP 16,26701 Pierrelatte Cedex,France

出　　处：《Journal of Energy Chemistry》2023年第10期310-323,I0010,共15页能源化学（英文版）

基　　金：ORANO Chimie-Enrichissement Co.for the financial support of this project。

摘　　要：Undoped nickel-based catalysts supported on depleted uranium oxide allow one to carry out CO_(2)methanation process under extremely low reaction temperature under atmospheric pressure and powered by a contactless induction heating.By adjusting the reaction conditions,the catalyst is able to perform CO_(2)methanation reaction under autothermal process operated inside a non-adiabatic reactor,without any external energy supply.Such autothermal process is possible thanks to the high apparent density of the UO_x which allows one to confine the reaction heat in a small catalyst volume in order to confine the exothermicity of the reaction inside the catalyst and to operate the reaction at equilibrium heat in-heat out.Such autothermal operation mode allows one to significantly reduce the complexity of the process compared to that operated using adiabatic reactor,where complete insulation is required to prevent heat disequilibrium,in order to reduce as much as possible,the heat exchange with the external medium.The catalyst displays an extremely high stability as a function of time on stream as no apparent deactivation.It is expected that such new catalyst with unprecedented catalytic performance could open new era in the field of heterogeneous catalysis where traditional supports show their limitations to operate catalytic processes under severe reaction conditions.

关 键 词：CO_(2)methanation Auto-methanation Induction heating Depleted uranium oxide Electrification process Operando DRIFTS 

分 类 号：TQ426[化学工程]