ADSORPTION FROM BINARY SOLUTIONS OF NON-ELECTROLYTES

被引：27

作者：

Delmas, G. ^{[1
]}

Patterson, D. ^{[1
]}

机构：

[1] Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1960年 / 64卷 / 12期

关键词：

D O I：

10.1021/j100841a007

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：

A treatment of adsorption of binary regular solutions is presented using the Grand Partition Function and the Bragg-Williams approximation. Explicit solutions of the problem are found (1) when the surface makes a small perturbation of the solution composition (2) at the critical point for phase separation and (3) when adsorption is confined to the 1st or surface layer of the solution. The effect of the surface falls off exponentially and rapidly on entering the solution except near the critical point where a very slow fall-off is found. Case (3) is thus usually found experimentally; published experimental isotherms for the adsorption of benzene-cyclohexane on carbon blacks are analyzed, showing the degree of heterogeneity of these surfaces.

引用

页码：1827 / 1830

页数：4