title: Adsorption characterisation of different volatile organic compounds over alumina, zeolites and activated carbon using inverse gas chromatography.
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.
authors.affiliation: Department of Chemical Engineering and Environmental Technology, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Díaz
authors.forename: Salvador
authors.initials: S
authors.lastname: Ordóñez
authors.forename: Aurelio
authors.initials: A
authors.lastname: Vega
authors.forename: José
authors.initials: J
authors.lastname: Coca
mesh_terms: D000327:Adsorption; D000465:Algorithms; D000537:Aluminum Oxide; D002849:Chromatography, Gas; D004058:Diffusion; D006863:Hydrogen-Ion Concentration; D009930:Organic Chemicals / Q000032:analysis*; D013816:Thermodynamics; D017641:Zeolites
chemical_list: D009930:Organic Chemicals; D017641:Zeolites; D000537:Aluminum Oxide