INFLUENCE OF ADSORBATE SIZE AND ADSORBENT HETEROGENEITY ON IAST

被引：89

作者：

SIRCAR, S

机构：

[1] Air Products and Chemicals, Inc., Allentown, Pennsylvania

来源：

AICHE JOURNAL | 1995年 / 41卷 / 05期

关键词：

D O I：

10.1002/aic.690410509

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The ideal adsorbed solution theory (IAST) can introduce serious errors in the calculation of multicomponent gas adsorption equilibria from the corresponding pure gas adsorption isotherms when the adsorbate sizes and the degree of adsorbent heterogeneity for adsorption of the components differ substantially. The multisite Langmuir and heterogeneous Langmuir models were used to evaluate the extent of these errors. It is shown that large differences in adsorbate sizes and degrees of heterogeneity of adsorption of the components of a mixture can cause the formation of an adsorption azeotrope that cannot be described by IAST.

引用

页码：1135 / 1145

页数：11

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