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用自行设计和建立的加压动态分析装置研究了甲烷化催化剂上氢的吸附和反应行为．结果表明，在反应条件下吸附的氢可区分为不可逆吸附氢和可逆吸附氢两类，不可逆吸附氢又可分为能被ＣＯ顶替出来的和不能被顶替的两种．起甲烷化反应的是可逆吸附氢，而能被ＣＯ顶替出来的不可逆氢对吸附ＣＯ起促进作用，不能被ＣＯ顶替出来的不可逆氢是甲烷化催化剂必不可少的组分（或称“促进剂”）．
Adsorption and reaction of hydrogen on methanation catalysts were studied by a pressurized dynamic analyzer designed and built by ourselves. The results show that the hydrogen adsorbed under the reaction conditions can be divided into two types: irreversible adsorbed hydrogen and reversible adsorbed hydrogen. The irreversible adsorbed hydrogen can be divided into two kinds that can be replaced by CO and can not be replaced. Since the methanation reaction is reversible adsorption of hydrogen, but can be replaced by CO irreversible hydrogen on the adsorption of CO play a catalytic role can not be replaced by CO of irreversible hydrogen is an essential component of methanation catalyst (or “accelerator ”).