程序升温脱附的动力学近似公式  

Approximate Formulas of Kinetics in Process of Temperature Program Desorption

作　　者：石守衡[1] 李德山 Shi Shouheng;Li Dershan(Chemistry Engineering,Darlian Industry College,Darlian;Darlian Medication Institute,Darlian)

机构地区：[1]大连轻工业学院化工系 [2]大连药物所

出　　处：《高等学校化学学报》1986年第1期80-82,共3页Chemical Journal of Chinese Universities

摘　　要：几十年来,程序升温脱附法(TPD方法)被催化理论与实验工作者广泛地用于测定气体在固体催化剂表面的脱附活化能,和鉴定气体在固体催化剂表面的不同吸附态,某些热分解反应也采用了线性升温的方法。我们知道,在TPD的实验处理上大多采用了忽略再吸附的近似。这里不妨在同一近似的基础上,在不影响原近似结果的条件下,采取进一步近似,以方便于覆盖度θ的计算。During last decades,TPD method is used for determining heat of desorption of the gases adsorbed on the surface of solid catalyst and for testing state of the gases adsorbed.Even now the method is used in the thermal decomposition reaction.Generally,re-adsorption is ignored in treatment of TPD experiment data.In the same appraximation condition,it is convenient to calculate the coverageθif we let(1+βt/T_(0))^(1)=1-βt/T_(0),where t is the time of reaction,β is the rate of raising temperaiure,and T_(0) is the temperature where t=0.

关 键 词：固体催化剂 脱附活化能 程序升温脱附法 热分解反应 近似公式 吸附态 实验处理 TPD 

分 类 号：O64[理学—物理化学]