Liquid sorption and immersional wetting on dealuminated Y-type zeolites

I. Dékány, Ferenc Szántó, L. Nagy, Hermann K. Beyer

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The adsorption and immersional wetting properties of Na-Y zeolite essentially change by dealumination of the zeolite. By studying the adsorption of alcohol-benzene and benzene-n-heptane mixtures it was found that the dealumination results in a decrease of the adsorption capacity of about 25% and in a depolarization of the surface. The decrease of the surface energy is also supported by microcalorimetric immersion measurements. The changes of excess free energy, excess enthalpy, and excess entropy accompanying the wetting process were calculated from the experimentally determined adsorption excess isotherms and immersion wetting data. The thermodynamic potential functions indicate that dealumination results in a considerable decrease of the sorption selectivity and of the surface energy of zeolite Y.

Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalJournal of Colloid and Interface Science
Volume112
Issue number1
DOIs
Publication statusPublished - 1986

Fingerprint

Zeolites
zeolites
sorption
wetting
Wetting
Sorption
Benzene
Interfacial energy
Adsorption
adsorption
Liquids
liquids
submerging
surface energy
benzene
Depolarization
Heptane
Adsorption isotherms
Free energy
Enthalpy

ASJC Scopus subject areas

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

Cite this

Liquid sorption and immersional wetting on dealuminated Y-type zeolites. / Dékány, I.; Szántó, Ferenc; Nagy, L.; Beyer, Hermann K.

In: Journal of Colloid and Interface Science, Vol. 112, No. 1, 1986, p. 261-267.

Research output: Contribution to journalArticle

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