活性非均匀分布对环氧乙烷银催化剂选择性的影响

Influence on Selectivity of the Silv er Catalyst of Ethylene Oxidation to Ethlene Oxide by Non-uniformed Active Distribution

文章讨论了具有δ函数、抛物线函数等非均匀型活性分布形式对环柱状银催化剂上进行的乙烯氧化制环氧乙烷反应选择性的影响。计算结果表明:在相同的工况下,与均匀分布型催化剂相比,具有特定形式活性非均匀分布,催化剂内部温升明显降低,反应选择性显著提高。

In this paper,the influence ofδand parabola function active distribution on selectivity of ethylene ox idation to ethylene oxide silver catalyst with hollow cy lindrical shape is discussed.The calculating results show that the reac tion selectivity increases greatly and the temperature within c atalyst with non-uniform active dis tribution decreases greatly under t he same conditions,com-pared with the silver catalyst with u niform activity distribution.