Ion exchange and molecular adsorption of a cationic surfactant on clay minerals

Ágnes Patzkó, I. Dékány

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

The adsorption of hexadecylpyridinium chloride (HDPCl) from aqueous solution on to the clay minerals kaolinite, attapulgite, vermiculite, allevardite and monocationic montmorillonites was investigated. The organic ion exchange capacity was determined from the section of the adsorption isotherm characteristic of ion exchange adsorption. The values obtained were found to be related to the structures of the clay minerals. Adsorption of Cl- ions was observed in the section relating to molecular adsorption. The basal plane distances of swelling clay minerals were calculated from X-ray diffraction measurements. Formation of the adsorption layer could be explained by interlamellar expansion. Further, the dispersion properties of the organocomplexes of tenside clay minerals in toluene were investigated. A correlation was established between the swelling, disaggregation and structure-forming properties of the organocomplex dispersed in the organic liquid, and both tenside adsorption and X-ray diffraction data.

Original languageEnglish
Pages (from-to)299-307
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume71
Issue number3
DOIs
Publication statusPublished - Jun 9 1993

Fingerprint

Cationic surfactants
Clay minerals
clays
Ion exchange
surfactants
minerals
Adsorption
adsorption
ions
Surface-Active Agents
Swelling
swelling
Cetylpyridinium
Kaolin
X ray diffraction
vermiculite
Kaolinite
Toluene
organic liquids
kaolinite

Keywords

  • Adsorption
  • cationic surfactant
  • clay minerals
  • ion exchange.

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Ion exchange and molecular adsorption of a cationic surfactant on clay minerals. / Patzkó, Ágnes; Dékány, I.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 71, No. 3, 09.06.1993, p. 299-307.

Research output: Contribution to journalArticle

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