Diffusion mechanisms of zeolite catalysts

被引：30

作者：

Masuda, T ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Div Engn & Mat Sci, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

CATALYSIS SURVEYS FROM ASIA | 2003年 / 7卷 / 2-3期

关键词：

diffusion mechanism; zeolite catalyst; intracrystalline diffusivity; effective diffusivity; condensation effect;

D O I：

10.1023/A:1025333507890

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

The diffusion mechanisms within zeolite catalysts, such as resistance to diffusion at pore mouths, configurational diffusion, adsorption-controlled diffusion, influence of co-existing molecules and pore blocking, were overviewed. Two kinds of diffusivities, the intracrystalline diffusivity and the effective diffusivity, were discussed separately to clarify the diffusion mechanism.

引用

页码：133 / 144

页数：12

共 18 条

[1]

Crank J, 1979, MATH DIFFUSION

[2]

Fogler H.S., 1999, ELEMENTS CHEM REACTI

[3]

Measurement of the diffusivities within MFI- and Y-type zeolite catalysts in adsorption and desorption processes [J].