Adsorption characterisation of different volatile organic compounds over alumina, zeolites and activated carbon using inverse gas chromatography

Eva Díaz; Salvador Ordóñez; Aurelio Vega; José Coca

doi:10.1016/j.chroma.2004.07.061

Adsorption characterisation of different volatile organic compounds over alumina, zeolites and activated carbon using inverse gas chromatography

J Chromatogr A. 2004 Sep 17;1049(1-2):139-46. doi: 10.1016/j.chroma.2004.07.061.

Authors

Eva Díaz¹, Salvador Ordóñez, Aurelio Vega, José Coca

Affiliation

¹ Department of Chemical Engineering and Environmental Technology, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain.

PMID: 15499926
DOI: 10.1016/j.chroma.2004.07.061

Abstract

Adsorption parameters (enthalpy of adsorption, free energy of adsorption) of several alkanes, cyclic hydrocarbons, aromatic hydrocarbons and chlorinated compounds on different adsorbents (alumina, zeolites 13X and 5 A, and activated carbon) were determined by inverse gas chromatography. Dispersive surface energy interaction and specific interaction parameters were determined for each solute-adsorbent system. It was found that mesoporous alumina presents lower enthalpy of adsorption than the microporous materials. Furthermore, zeolite 13X, which has wider pores than zeolite 5 A, exhibits a higher adsorption capacity.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Algorithms
Aluminum Oxide
Chromatography, Gas
Diffusion
Hydrogen-Ion Concentration
Organic Chemicals / analysis*
Thermodynamics
Zeolites

Substances

Organic Chemicals
Zeolites
Aluminum Oxide