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Reactive ionic liquid media for the separation of propylene/propane gaseous mixtures / Alfredo Ortiz in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7227–7233 Titre : Reactive ionic liquid media for the separation of propylene/propane gaseous mixtures Type de document : texte imprimé Auteurs : Alfredo Ortiz, Auteur ; Lara Maria Galan, Auteur ; Daniel Gorri, Auteur Année de publication : 2010 Article en page(s) : pp. 7227–7233 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ionic  Liquid  Gaseous  Mixtures Résumé : Designed room temperature ionic liquids (RTILs) containing silver salt are presented as reactive media in separating propylene/propane gas mixtures. Solubilities of propylene and propane in the reactive media, silver tetrafluoroborate (AgBF4) dissolved in 1-butyl-3-methylimidazolium tetrafluoroborate (BmimBF4) and N-butyl-4-methylpyridinium tetrafluoroborate (BmpyBF4), were investigated as a function of silver ion concentration, temperature, and pressure. Equilibrium data were obtained working in a temperature range between 278 and 318 K and at pressures up to 6 bar. Propylene absorption was chemically enhanced in the silver-based RTILs and was considerably higher than that in the standard RTILs. Absorption of propane in the silver-based RTILs is based on physical interactions only. A simple mathematical model based on the formation of complex species with different stoichiometry has been developed in order to describe the total propylene absorption, and the model was validated with experimental data obtained working with different concentrations of silver salt (between 0.1 and 1 M). The model parameters, equilibrium constants (KEq,1 f(T) and KEq,2 f(T)), and enthalpies of complexation (ΔHr,1, ΔHr,2) were obtained. Thermal stability of the silver ions was analyzed and to be found dependent on the silver salt concentration. Complete regeneration of the reaction media was possible at a temperature of 313 K and 20 mbar of pressure. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100576r [article] Reactive ionic liquid media for the separation of propylene/propane gaseous mixtures [texte imprimé] / Alfredo Ortiz, Auteur ; Lara Maria Galan, Auteur ; Daniel Gorri, Auteur . - 2010 . - pp. 7227–7233. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7227–7233 Mots-clés : Ionic  Liquid  Gaseous  Mixtures Résumé : Designed room temperature ionic liquids (RTILs) containing silver salt are presented as reactive media in separating propylene/propane gas mixtures. Solubilities of propylene and propane in the reactive media, silver tetrafluoroborate (AgBF4) dissolved in 1-butyl-3-methylimidazolium tetrafluoroborate (BmimBF4) and N-butyl-4-methylpyridinium tetrafluoroborate (BmpyBF4), were investigated as a function of silver ion concentration, temperature, and pressure. Equilibrium data were obtained working in a temperature range between 278 and 318 K and at pressures up to 6 bar. Propylene absorption was chemically enhanced in the silver-based RTILs and was considerably higher than that in the standard RTILs. Absorption of propane in the silver-based RTILs is based on physical interactions only. A simple mathematical model based on the formation of complex species with different stoichiometry has been developed in order to describe the total propylene absorption, and the model was validated with experimental data obtained working with different concentrations of silver salt (between 0.1 and 1 M). The model parameters, equilibrium constants (KEq,1 f(T) and KEq,2 f(T)), and enthalpies of complexation (ΔHr,1, ΔHr,2) were obtained. Thermal stability of the silver ions was analyzed and to be found dependent on the silver salt concentration. Complete regeneration of the reaction media was possible at a temperature of 313 K and 20 mbar of pressure. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100576r