【摘要】 本文用断流色谱技术研究了甲醇在TS-96催化剂上分解反应的动力学。在不同温度下改变催化剂粒度进行实验,测得该反应的速度常数,并求出反应的活化能。由于在同一温度下存在两个不同的速度常数k 快和k 慢,并可计算出两个不同的表现活化能E 快和E 慢。所以,我们认为TS-96催化剂表面上存在两种不同的活性中心,并按两个不同的机理进行反应。此外,通过断流实验表明,甲醇在TS-96催化剂上的吸附是强吸附,产物CO 和H₂是弱吸附,关于这一点目前还是个有争议的问题。更多还原

【Abstract】 The kinetics of methanol decomposition at different temperatures on TS-96catalyst of various sizes wa,s studied by means of stopped-flow gas chromatogra-phic technique.The reaction rate constants Were determined and activation energywas calculated.Since there are two different rate constants,i.e,k_fast and k_（?）ow,for each temperature and,accordingly,two different apparent activation energies,E_fastand E_slowcan be calculated,it is suggested that two different types of activesites exist on the surface of catalyst and carry out reactions according to differentmechanisms.It also indicates that,contrary to the literature,the adsorption ofmethanol on TS-96 is strong whereas that of products（CO and H₂）are weak.更多还原