A study of the adsorption and surface properties of KSKG silica gel by gas chromatographyстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Abstract
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.