文献类型：期刊文献

中文题名：沸石分子筛材料中次级孔的研究——Ⅱ.Y型沸石晶内次级孔对扩散的影响

英文题名：Study on Secondary Pores in Zeolite Molecular Sieve Materials——Ⅱ. Effect of Intracrystalline Secondary Pores of Y Type Zeolite on Diffusion

作者：柏子龙[1];陈绍洲[1];常可怡[1];富燕红[1];刘馥英[1]

机构：[1]华东化工学院石油加工研究所

年份：1993

卷号：19

期号：3

起止页码：249

中文期刊名：华东化工学院学报

收录：Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：沸石;扩散;孔结构;分子筛;扩散

外文关键词：zeolite;diffusion;pore structure;secondary pore;random walk

摘要：以含有次级孔的沸石的晶内扩散为研究对象,对来源于同一NaY母体的一组改性Y型沸石,进行了孔结构分析和正戊烷的扩散系数的测定。得到了具不同次级孔量的Y型沸石晶内扩散性能变化的规律。并采用随机游动方法对实际的Y型沸石晶内扩散进行模拟,得到了与实验测定一致的结果,从而可以对有次级孔的Y型沸石的晶内扩散做定量的估计。
The present study relates to the intracrystalline diffusion in zeolite with secondary pores. Porous structure analyses and measurement of diffusivities of n-pentane are carried out on samples originated from the same type of NaY zeolite. The change of intracrystalline diffusivity of the zeolites with different secondary pores is investigated, and random walk simulation method is applied to the samples of same type. The results agree with the experimental data. Thus the intracrystalline diffusivities of zeolites with secondary pores can be estimated quantitatively.