Wetting and adsorption on organophilic illites and swelling montmorillonites in methanol-benzene mixtures

I. Dékány, F. Szántó, L. G. Nagy

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Adsorption and immersion were studied simultaneously in methanol-benzene mixtures on non-swelling organophilic illites and swelling organophilic montmorillonites. From the combination of adsroption and calorimetric data, equations were proposed for the determination of the adsorption capacity and the molar enthalpies of wetting differences, if the adsorption layer behaved ideally. From the experimental enthalpy isotherms of wetting and the enthalpy functions related to the ideal behaviour of the layer, qualitative conclusions were drawn on the excess enthalpy of the adsorpition layer. It was again established that the adsorption layer composed of alkyl chains, benzene and methanol has a regular cluster structure in certain concentration ranges, which breaks at higher methanol concentrations. This change is reflected by a significant endothermic peak of the differential molar enthalpy. For the organophilic montmorillonites, the enthalpy of swelling was determined separately as a function of the composition. The non-swelling organophilic illites were chosen as a reference system.

Original languageEnglish
Pages (from-to)82-96
Number of pages15
JournalColloid & Polymer Science
Volume266
Issue number1
DOIs
Publication statusPublished - Jan 1988

Fingerprint

Benzene
swelling
wetting
Methanol
Swelling
Wetting
Enthalpy
methyl alcohol
enthalpy
benzene
Adsorption
adsorption
reference systems
submerging
Isotherms
isotherms
Chemical analysis

Keywords

  • Adsorption
  • binary liquid mixtures
  • clay minerals
  • disaggregation
  • immersional wetting
  • swelling

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Wetting and adsorption on organophilic illites and swelling montmorillonites in methanol-benzene mixtures. / Dékány, I.; Szántó, F.; Nagy, L. G.

In: Colloid & Polymer Science, Vol. 266, No. 1, 01.1988, p. 82-96.

Research output: Contribution to journalArticle

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