A study of the adsorption and surface properties of KSKG silica gel by gas chromatography

被引：4

作者：

Kovaleva, N. V. ^{[1
]}

Lanin, S. N. ^{[1
]}

Langerudi, N. Samadani ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119992, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY | 2006年 / 80卷 / 06期

关键词：

Chromatography; Physical Chemistry; Adsorption Isotherm; Surface Property; Adsorption Property;

D O I：

10.1134/S0036024406060185

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 properties of commercial wide-pore KSKG silica gel with respect to n-alkanes and their derivatives, the molecules of which possess different electron-donor and electron-acceptor properties, were studied by gas chromatography. The adsorption isotherms were used to determine the heats of adsorption, differential molar Helmholtz energies, and contributions of dispersion and specific (acid-base or donor-acceptor) interactions to these energies. The electron-donor and electron-acceptor characteristics of extremely hydroxylated silica gel surface were estimated. The electron-acceptor properties of the surface of KSKG were found to be much stronger than its electron-donor properties.

引用

页码：945 / 949

页数：5

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