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本文研究了海泡石和稀土Sm镍催化剂的苯加氢活性及CO2 甲烷化活性的影响 ,并用XPS、活性比表面积及CS2 中毒等方法表征了催化剂的表面性质。结果表明 ,海泡石和稀土Sm能提高镍催化剂的加氢活性和抗毒性 ,并能增大活性镍的比表面及镍上的电子云密度 ,降低CO2 甲烷化反应的活化能。
In this paper, the effects of sepiolite and rare earth Sm on the hydrogenation activity of benzene and CO2 methanation were investigated. The surface properties of the catalysts were characterized by XPS, specific surface area and CS2 poisoning. The results show that sepiolite and rare earth Sm can improve the hydrogenation activity and toxicity of the nickel catalyst, increase the specific surface area of the active nickel and the electron cloud density on the nickel, and lower the activation energy of the carbon dioxide methanation reaction.