负载型镍催化剂上CO_2加氢甲烷化研究

制备了一系列无机氧化物负载的金属镍催化剂 ,对用于CO2 加氢甲烷化反应的催化活性作了研究。结果表明 ,有多种负载型镍催化剂具有较高活性 ,不同载体负载的镍催化剂的活性顺序为 :二氧化钛 >二氧化锆 >海泡石 >氧化铝 >二氧化硅。添加第 2组分Ⅷ族金属及非Ⅷ族金属对催化剂活性具有较大的影响。镍催化剂作用下的反应平均活化能为 82 1kJ/mol。

The methanation of carbon dioxide on supported nickel catalyst

Ni catalysts supported on inorganic oxides have been prepared by aqueous impregnation. The catalytic activities are investigated. The results indicate that some Ni catalysts supported on inorganic oxide show high activities. The different catalysts over various supports follow the active order: titania>zirconia>sepiolite>alumina>silica. The reaction conditions and the introductions of other Ⅷgroup or non Ⅷ group metal influence the catalytic activities evidently.The average activation energy is 82.1kJ/mol.