DISPLACEMENT PROCESS ON HYDROPHILIC HYDROPHOBIC SURFACES IN METHANOL-WATER MIXTURES

被引：26

作者：

MAROSI, T ^{[1
]}

DEKANY, I ^{[1
]}

LAGALY, G ^{[1
]}

机构：

[1] UNIV KIEL,INST ANORGAN CHEM,W-2300 KIEL 1,GERMANY

来源：

COLLOID AND POLYMER SCIENCE | 1992年 / 270卷 / 10期

关键词：

SOLID LIQUID INTERFACE; MULTILAYER; ADSORPTION; ENTHALPY OF DISPLACEMENT; LAYER SILICATE;

D O I：

10.1007/BF00655972

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：

The adsorption from methanol/water and the enthalpy of displacement of methanol by water were studied on K-60 silica gel, on graphitized PRINTEX-80, and on n-alkylammonium vermiculites. The adsorption between the hydrophobized silicate layers was followed by x-ray measurements. The excess isotherms of alkylammonium vermiculites in methanol/water exhibit two maxima corresponding to the two steps of the individual isotherm. The equilibrium constant of the exchange of water by methanol is calculated. For calculating the adsorption capacities and molar adsorption potentials, a new equation is proposed which combines the adsorption excess quantities with free energy and enthalpy functions.

引用

页码：1027 / 1034

页数：8

共 32 条

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