γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO₂Methanation  

作　　者：Lu Yao Ye Wang Maria Elena Galvez Changwei Hu Patrick da Costa 

机构地区：[1]Sorbonne Universités, UPMC, Univ. Paris 6, Institut Jean Le Rond d’Alembert, Paris, France [2]Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China [3]College of Chemical Engineering, Sichuan University, Chengdu, China

出　　处：《Modern Research in Catalysis》2017年第4期135-145,共11页催化剂现代研究（英文）

摘　　要：CO2 methanation with Hydrogen to form CH4 offers a solution for off-peak renewable energy storage. γ-alumina-supported Mo and Ni-Mo catalysts were used in CO2 methanation, either in their reduced or in their carburized form. The presence of Ni improved the carburization extent of Mo-species, resulting in increased catalytic activity and selectivity for the catalytic CO2 methanation reaction. Carburization generally enhances the basicity of the materials and thus CO2 absorption on their surface. At 300°C, the conversions of CO2 for the reduced Ni-Mo/Al2O3 catalyst and Ni-Mo2C/Al2O3 catalysts were 5.3% and 13.8% respectively with a corresponding selectivity in CH4 of 10.0% and 98.1%, respectively.CO2 methanation with Hydrogen to form CH4 offers a solution for off-peak renewable energy storage. γ-alumina-supported Mo and Ni-Mo catalysts were used in CO2 methanation, either in their reduced or in their carburized form. The presence of Ni improved the carburization extent of Mo-species, resulting in increased catalytic activity and selectivity for the catalytic CO2 methanation reaction. Carburization generally enhances the basicity of the materials and thus CO2 absorption on their surface. At 300°C, the conversions of CO2 for the reduced Ni-Mo/Al2O3 catalyst and Ni-Mo2C/Al2O3 catalysts were 5.3% and 13.8% respectively with a corresponding selectivity in CH4 of 10.0% and 98.1%, respectively.

关 键 词：CO2 METHANATION CARBIDE Catalysts Nickel Molybdenum 

分 类 号：O6[理学—化学]