阶跃过渡应答法研究甲醇完全氧化反应动力学  

Study of kinetics for complete oxidation of methanol by step transient response method Adsorption behaviour of CH_3OH,O_2,CO_2 and reaction response of complete oxidation of CH_3OH

作　　者：熊辉[1] 刘秀英[1] 马丽景 李增和[1] 王雪梅[1] 张仁佑[1] 

机构地区：[1]北京化工大学应用化学系

出　　处：《北京化工大学学报（自然科学版）》1998年第2期52-56,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：用阶跃过渡应答法研究在ＰｄＡｇ／Ａｌ２Ｏ３催化剂上甲醇、氧、二氧化碳的吸附行为以及甲醇完全氧化反应应答。结果表明：甲醇为慢吸附、不可逆吸附，氧和二氧化碳为快速、可逆吸附；吸附态氧与吸附态甲醇的反应为快反应；甲醇在催化剂上的吸附是甲醇完全氧化反应的慢步骤。The adsorption behaviour of CH_3OH,O_2,CO_2 and the reaction response of the complete oxidation of CH_3OH on the surface of Pd Ag/Al 2O_3 catalyst have been studied by the Step Transient Response method. The results showed that (1) CH_3OH was adsorbed slowly and irreversiblely. (2) O_2 and CO_2 were adsorbed quickly and reversiblely. (3) The reaction between CH_3OH and O, which, were adsorbed on catalyst surface, proceeded fast. (4) The process of adsorption of CH_3OH on surface of catalyst was the slowest step for the complete oxidation of CH_3OH.

关 键 词：催化剂 动力学 氧化 钯 银 甲醇汽车 尾气净化 

分 类 号：X511.05[环境科学与工程—环境工程]