Sorption and immersional wetting on clay minerals having modified surface. II. Interlamellar sorption and wetting on organic montmorillonites

Imre Dékány, Ferenc Szántó, Lajos György Nagy

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Abstract

Adsorption of methanol-benzene mixtures and heats of immersion have been investigated on the organic derivatives of montmorillonite. The surface of the mineral was modified by n-alkyl pyridinium and dimethyldihexadecyl ammonium ions. In the case of completely exchanged samples the adsorption capacity volumes agree with the interlamellar volumes calculated from X-ray diffraction data rather well. The organophilicity is characterized by the proportion of the nonpolar/polar surfaces. The specific enthalpies of immersion have been measured in methanol, benzene, and their mixtures. The immersion shows endothermic-exothermic or endothermic heat effects.

Original languageEnglish
Pages (from-to)376-384
Number of pages9
JournalJournal of colloid and interface science
Volume109
Issue number2
DOIs
Publication statusPublished - Feb 1986

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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