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Evidence for the existence of a solvation term in the mutual interaction of hydrophobic surfaces in disperse systems

  • M. Müller
  • M. Müther
  • I. Belouschek
  • P. Belouschek
  • G. Peschel
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 67)

Abstract

The adsorption of the 2-, 3-, and 4-substituted methyl, ethyl-, and chlorophenols from aqueous solution in the presence of chiefly sodium chloride of the concentration 10−4–3 mol dm−3 onto active carbon was determined by an improved experimental device. It could be shown that for the alkylphenols the adsorption increased when going from the 2- to the 4-substituted compounds which can be explained when including water structure.

For the chlorophenols the order is changed and follows the dissociation constants. In the concentration range above 0.5 mol dm−3 electrolyte the adsorption grows stronger. It is of interest that in most cases and adsorption minimum occurs at about 0.1 mol dm−3 which can obviously be ascribed to a particularly strong interfacial hydration in this region. The results suggest that hydration layers on adsorbents impede the adsorptional process.

Keywords

Active Carbon Polyvinyl Acetate Hydration Layer Disjoin Pressure Sodium Bromide 
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

© Dr. Dietrich Steinkopff Verlag 1980

Authors and Affiliations

  • M. Müller
    • 1
    • 2
  • M. Müther
    • 1
    • 2
  • I. Belouschek
    • 1
    • 2
  • P. Belouschek
    • 1
    • 2
  • G. Peschel
    • 1
    • 2
  1. 1.Department of Physical and Theoretical Chemistry of the University and Gesamthochschule EssenFRG
  2. 2.Teilbereich Physikal. u. Theoret. ChemieUniversität Essen — GesamthochschuleEssen 1

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