Sorption and immersional wetting on clay minerals having modified surface. I. Surface properties of nonswelling clay mineral organocomplexes

I. Dékány, Ferenc Szántó, L. Nagy

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Abstract

Adsorption of methanol-benzene mixtures and the immersional wetting properties have been investigated on nonswelling clay minerals with lamellar structure (kaolinite and illite) and on their organocomplexes obtained by hexadecyl-pyridinium cations (HDP+). It has been found that the surface modification can influence the selective liquid adsorption. To interpret unambiguously the extent of the surface modification the nonpolar-polar surface area ratio can be calculated from the sorption data. From the excess isotherms and the enthalpy of immersion the surface thermodynamic potential functions have been calculated. The changes of these functions and the equilibrium constant of the adsorption with the surface polarity is given. Adsorption capacity data and immersional wetting experiments indicate that the surface extension of these organocomplexes can change in some degree.

Original languageEnglish
Pages (from-to)321-331
Number of pages11
JournalJournal of Colloid and Interface Science
Volume103
Issue number2
DOIs
Publication statusPublished - 1985

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Clay minerals
sorption
surface properties
clays
wetting
Surface properties
Wetting
Sorption
minerals
Adsorption
Surface treatment
adsorption
Kaolin
Lamellar structures
Kaolinite
Equilibrium constants
Benzene
Methanol
Isotherms
Cations

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

Cite this

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abstract = "Adsorption of methanol-benzene mixtures and the immersional wetting properties have been investigated on nonswelling clay minerals with lamellar structure (kaolinite and illite) and on their organocomplexes obtained by hexadecyl-pyridinium cations (HDP+). It has been found that the surface modification can influence the selective liquid adsorption. To interpret unambiguously the extent of the surface modification the nonpolar-polar surface area ratio can be calculated from the sorption data. From the excess isotherms and the enthalpy of immersion the surface thermodynamic potential functions have been calculated. The changes of these functions and the equilibrium constant of the adsorption with the surface polarity is given. Adsorption capacity data and immersional wetting experiments indicate that the surface extension of these organocomplexes can change in some degree.",
author = "I. D{\'e}k{\'a}ny and Ferenc Sz{\'a}nt{\'o} and L. Nagy",
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T1 - Sorption and immersional wetting on clay minerals having modified surface. I. Surface properties of nonswelling clay mineral organocomplexes

AU - Dékány, I.

AU - Szántó, Ferenc

AU - Nagy, L.

PY - 1985

Y1 - 1985

N2 - Adsorption of methanol-benzene mixtures and the immersional wetting properties have been investigated on nonswelling clay minerals with lamellar structure (kaolinite and illite) and on their organocomplexes obtained by hexadecyl-pyridinium cations (HDP+). It has been found that the surface modification can influence the selective liquid adsorption. To interpret unambiguously the extent of the surface modification the nonpolar-polar surface area ratio can be calculated from the sorption data. From the excess isotherms and the enthalpy of immersion the surface thermodynamic potential functions have been calculated. The changes of these functions and the equilibrium constant of the adsorption with the surface polarity is given. Adsorption capacity data and immersional wetting experiments indicate that the surface extension of these organocomplexes can change in some degree.

AB - Adsorption of methanol-benzene mixtures and the immersional wetting properties have been investigated on nonswelling clay minerals with lamellar structure (kaolinite and illite) and on their organocomplexes obtained by hexadecyl-pyridinium cations (HDP+). It has been found that the surface modification can influence the selective liquid adsorption. To interpret unambiguously the extent of the surface modification the nonpolar-polar surface area ratio can be calculated from the sorption data. From the excess isotherms and the enthalpy of immersion the surface thermodynamic potential functions have been calculated. The changes of these functions and the equilibrium constant of the adsorption with the surface polarity is given. Adsorption capacity data and immersional wetting experiments indicate that the surface extension of these organocomplexes can change in some degree.

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