Evaluation of the heat of adsorption of some n-alkanes on alumina and zeolite by inverse gas chromatography

Askin A., Inel O.

Separation Science and Technology, vol.36, no.3, pp.381-397, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 3
  • Publication Date: 2001
  • Doi Number: 10.1081/ss-100102934
  • Journal Name: Separation Science and Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.381-397
  • Keywords: inverse gas chromatography, heat of adsorption, n-alkane adsorption, alumina, zeolite, SURFACE CHARACTERIZATION, HYDROCARBONS, POLYSTYRENE, COVERAGE, ORGANICS, FIBERS, SILICA
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

The isosteric heat of adsorption of some n-alkanes (n-C5 to n-C8) on some adsorbents(activated alumina, natural zeolite(clinoptilolite) and 13X molecular sieve) were evaluated by inverse gas chromatography using the temperature dependence of adsorption. The isosteric heat of adsorption of the probes on alumina and clinoptilolite were determined in the finite concentration region, and those on 13X were determined in the infinite dilution region. It was found that the adsorption isotherms for alumina and clinoptilolite conform with the Langmuir equation, and the isosteric heats of adsorption increase linearly with increasing carbon number of the probes for alumina and 13X.