摘要
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”）．
he adsorption and reaction of HZ on methanation catalySt (Ni/Al2O3)were Studied with the Pressure dynamic analysis equipment. The resultsshow that the adsorbed H2 on catalySt can be diStingUished as reversiblyadsorbed H2 and irreversibly adsorbed H2. The irreversibly adverbed H2can be diStinguished as two parts., F Part of the irreversibly adsorbedH2 which can be rePlaced by CO is necessary to CO adsorptioD, theother part of the irreversibly adsorbed H2 which can not be replaced byCO is a promoter of catalyst. And the reversibly adsorbed H2 is necessary to the formation of CH4, C2H6 etc.
基金
国家自然科学基金
关键词
氢
甲烷化
费-托合成
催化剂
吸附
reversibly adsorbed H_2,irreversibly adsorbed H_2,methanation,pressure dynamic analysis
