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Russian Journal of Physical Chemistry

, Volume 80, Issue 6, pp 945–949 | Cite as

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

  • N. V. Kovaleva
  • S. N. Lanin
  • N. Samadani Langerudi
Physical Chemistry of Surface Phenomena

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.

Keywords

Chromatography Physical Chemistry Adsorption Isotherm Surface Property Adsorption Property 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • N. V. Kovaleva
    • 1
  • S. N. Lanin
    • 1
  • N. Samadani Langerudi
    • 1
  1. 1.Faculty of ChemistryMoscow State UniversityLeninskie gory, MoscowRussia

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