Investigation of porous structure and surface properties of controlled porosity glasses

被引：7

作者：

Bilinski, B ^{[1
]}

Dawidowicz, AL ^{[1
]}

机构：

[1] MARIE CURIE SKLODOWSKA UNIV,FAC CHEM,DEPT CHEM PHYS,PL-20031 LUBLIN,POLAND

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1996年 / 118卷 / 1-2期

关键词：

porous glasses; porous structure; surface free energy; surface heterogeneity;

D O I：

10.1016/0927-7757(96)03727-2

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 series of controlled porosity glasses were prepared from the same raw material by leaching with basic solution for different periods of time. Adsorption isotherms of n-octane and toluene were determined by elution gas chromatography. From the adsorption isotherms, the dispersion and polar components of the surface free energy were calculated, and also the adsorption energy distribution function for adsorption of n-octane and toluene. The results are discussed in terms of both porous structure and surface chemistry. It may be concluded that a gradient distribution of alkali-borate constituents appears very close to the surface, and that prolonged leaching with a base does not change the strictly surface properties. The results are also discussed in terms of the type of surface-molecule interactions.

引用

页码：149 / 160

页数：12