THE CHANGES IN SURFACE FREE-ENERGY AND SURFACE HETEROGENEITY OF CONTROLLED-POROSITY GLASSES

被引：14

作者：

BILINSKI, B

机构：

[1] Department of Physical Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1994年 / 84卷 / 2-3期

关键词：

CONTROLLED-POROSITY GLASSES; SURFACE FREE ENERGY; SURFACE HETEROGENEITY;

D O I：

10.1016/0927-7757(93)02722-Q

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 energy distribution function was calculated according to the asymptotically corrected condensation approximation method from n-octane and toluene retention data for two thermally treated and rehydroxylated controlled-porosity glasses. Similar calculations were Performed for a model series of silica gels, the surfaces of which were previously covered with boron and sodium compounds. Certain differences in surface site distributions were observed. The results for toluene were then correlated with changes in the surface free energy. Such correlations are presented separately for thermally treated and subsequently rehydroxylated materials. The results are discussed in terms of the differences in surface chemistry.

引用

页码：265 / 272

页数：8

共 22 条

[1] THE DETERMINATION OF THE DISPERSION AND POLAR FREE-SURFACE ENERGY OF QUARTZ BY THE ELUTION GAS-CHROMATOGRAPHY METHOD [J].