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


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.


Chromatography Physical Chemistry Adsorption Isotherm Surface Property Adsorption Property 
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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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