Adsorption of 1-butanol from water on modified silicate surfaces

I. Regdon, Z. Király, I. Dékány, G. Lagaly

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The structure and the sorption properties of partially hydrophobized silicates (dodecylammonium and dodecyldiammonium vermiculites) have been investigated in aqueous solutions of 1-butanol. The alcohol is preferentially adsorbed on the surface. The interlayer composition is calculated from adsorption and x-ray diffraction data. In air-dried state the organic cations lie flat on the interlamellar surface. In aqueous butanol solutions, the basal spacing of dodecylammonium vermiculite gradually increases with the extent of butanol adsorption because the chains increasingly point away from the surface. The basal spacing of dodecyldiammonium vermiculite is virtually independent on the interlayer composition because the expansion of the interlayer space is sterically restricted and a relatively rigid structure is formed. The enthalpy of the displacement of water by 1-butanol has been determined by flow sorption microcalorimetry. The displacement process is endothermic.

Original languageEnglish
Pages (from-to)1129-1135
Number of pages7
JournalColloid & Polymer Science
Volume272
Issue number9
DOIs
Publication statusPublished - Sep 1994

Fingerprint

Silicates
1-Butanol
Butenes
vermiculite
interlayers
silicates
Butanols
Adsorption
sorption
adsorption
Sorption
Water
spacing
water
aqueous solutions
Rigid structures
rigid structures
Chemical analysis
Cations
Enthalpy

Keywords

  • Adsorption from solution
  • alkylammonium ions
  • clay minerals
  • enthalpy of displacement
  • solid/liquid interface
  • surface modification
  • vermiculite

ASJC Scopus subject areas

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

Cite this

Adsorption of 1-butanol from water on modified silicate surfaces. / Regdon, I.; Király, Z.; Dékány, I.; Lagaly, G.

In: Colloid & Polymer Science, Vol. 272, No. 9, 09.1994, p. 1129-1135.

Research output: Contribution to journalArticle

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