Russian Chemical Bulletin

, Volume 48, Issue 8, pp 1462–1466 | Cite as

The heat of adsorption of water on nonporous hydrophilic carbon adsorbents in the model of two-stage adsorption

  • G. I. Berezin
Physical Chemistry


The behavior of integral and differential heats of adsorption of water in the region of transition from the first stage of adsorption (formation of clusters) to the second stage (formation of a stretched liquid film) was considered. The curve of integral heat of adsorption has an inflection at the transition point, and the differential heat of adsorption changes jumpwise. The values of these effects were estimated by the simplest model of formation of one and two hydrogen bonds between a water molecule and an adsorption center on the surface of the carbon adsorbent. Curves of differential heat of adsorption with transition points for real systems are presented.

Key words

heat of adsorption carbon adsorbents stretched liquid water 


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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • G. I. Berezin
    • 1
  1. 1.Institute of Physical ChemistryRussian Academy of SciencesMoscowRussian Federation

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