Chromatographia

, Volume 23, Issue 2, pp 97–101 | Cite as

A gas-solid chromatographic study of the adsorption of hydrocarbons and alcohols on graphite

  • F. J. López-Garzón
  • I. Fernandez-Morales
  • M. Domingo-García
Originals

Summary

The Henry's law region of the adsorption isotherms for several hydrocarbons and alcohols on a graphite was studied by gas-solid chromatography. The thermodynamic functions at zero surface coverage were determined. The low heats of adsorption indicate a highly homogeneous surface. A constant increment of the standard free energy with the number of carbon atoms in the lineal adsorbates was found. Attemps were made to estimate the London contribution to the surface free energy of the adsorbents. A non-specific interaction between the graphite and the adsorbates was shown.

Key Words

Gas solid chromatography Adsorption studies Graphite Hydrocarbons Alcohols 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1987

Authors and Affiliations

  • F. J. López-Garzón
    • 1
  • I. Fernandez-Morales
    • 1
  • M. Domingo-García
    • 1
  1. 1.Departamento de Química Inorgánica, Facultad de CienciasUniversidad de GranadaGranadaSpain

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