Activity coefficients of adsorbed mixtures

被引：39

作者：

Talu, O

Li, JM

Myers, AL

机构：

[1] CLEVELAND STATE UNIV,DEPT CHEM ENGN,CLEVELAND,OH 44115

[2] UNIV PENN,DEPT CHEM ENGN,PHILADELPHIA,PA 19104

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 1995年 / 1卷 / 02期

关键词：

adsorption; mixtures; activity coefficients; zeolites;

D O I：

10.1007/BF00704999

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 ; 081704 ;

摘要：

Experimental and simulated data for adsorption of gas mixtures on energetically heterogeneous surfaces like activated carbon and zeolites exhibit negative deviations from ideality. The deviations are large in some cases, with activity coefficients at infinite dilution equal to 0.1 or less. Similar molecules form ideal mixtures, but molecules of different size or polarity are nonideal. Equations for bulk liquid mixtures (Wilson, Margules, etc.) do not apply to isobars for adsorbed mixtures. A two-constant equation for activity coefficients as a function of composition and spreading pressure is in good agreement with theory, simulation, and experiment.

引用

页码：103 / 112

页数：10

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