CO2 Separation from flue gas using polyvinyl-(room temperature ionic liquid)–room temperature ionic liquid composite membranes / Pei Li in Industrial & engineering chemistry research, Vol. 50 N° 15 (Août 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9344-9353 Titre : CO2 Separation from flue gas using polyvinyl-(room temperature ionic liquid)–room temperature ionic liquid composite membranes Type de document : texte imprimé Auteurs : Pei Li, Auteur ; K. P. Pramoda, Auteur ; Tai-Shung Chung, Auteur Année de publication : 2011 Article en page(s) : pp. 9344-9353 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Composite material Ionic liquid Gaseous effluent Carbon dioxide Résumé : In this work, a vinyl-fonctionalized room temperature ionic liquid (RTIL), 1-vinyl-3-butylimidazolium bis-(trifluoromethylsulfonyl)imide ([vbim][Tf2N]), has been successfully synthesized. The RTIL was further polymerized and mixed with 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]) to form the free-standing poly([vbim]-[Tf2N])-[bmim][Tf2N] composite films. The compositions of [bmim] [Tf2N] in the composite membranes were designed at 15, 30, 45, and 60 wt %. The pristine poly([vbim][Tf2N]) and poly([vbim][Tf2N])-[bmim][Tf2N] composite membranes exhibit similar permeability selectivities as the standard [bmim][Tf2N] but permeabilities are enhanced up to 5 times higher than the equivalent polystyrene-RTIL and polyacrylate-RTIL membranes. An increase in [bmim][Tf2N] concentration of poly([vbim]-[Tf2N])-[bmim][Tf2N] composite membranes results in an increase in solubility, diffusivity, and permeability coefficients of CO2 and N2 but does not change the CO2/N2 selectivities of the solubility, diffusivity, and permeability. The CO2 permeability of the 60 wt % composite at 35°C, 10 atm is 559 barrers in pure gas tests which is closer to 60% of the [bmim][Tf2N] permeability (i.e., 1344 barrers). In addition, the 60 wt % composite membrane exhibits a CO2 permeability of 491.2 barrers and a CO2/N2 selectivity of 20 in mixed gas tests using CO2/N2 (50:50) as the feed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395879 [article] CO2 Separation from flue gas using polyvinyl-(room temperature ionic liquid)–room temperature ionic liquid composite membranes [texte imprimé] / Pei Li, Auteur ; K. P. Pramoda, Auteur ; Tai-Shung Chung, Auteur . - 2011 . - pp. 9344-9353. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9344-9353 Mots-clés : Composite material Ionic liquid Gaseous effluent Carbon dioxide Résumé : In this work, a vinyl-fonctionalized room temperature ionic liquid (RTIL), 1-vinyl-3-butylimidazolium bis-(trifluoromethylsulfonyl)imide ([vbim][Tf2N]), has been successfully synthesized. The RTIL was further polymerized and mixed with 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]) to form the free-standing poly([vbim]-[Tf2N])-[bmim][Tf2N] composite films. The compositions of [bmim] [Tf2N] in the composite membranes were designed at 15, 30, 45, and 60 wt %. The pristine poly([vbim][Tf2N]) and poly([vbim][Tf2N])-[bmim][Tf2N] composite membranes exhibit similar permeability selectivities as the standard [bmim][Tf2N] but permeabilities are enhanced up to 5 times higher than the equivalent polystyrene-RTIL and polyacrylate-RTIL membranes. An increase in [bmim][Tf2N] concentration of poly([vbim]-[Tf2N])-[bmim][Tf2N] composite membranes results in an increase in solubility, diffusivity, and permeability coefficients of CO2 and N2 but does not change the CO2/N2 selectivities of the solubility, diffusivity, and permeability. The CO2 permeability of the 60 wt % composite at 35°C, 10 atm is 559 barrers in pure gas tests which is closer to 60% of the [bmim][Tf2N] permeability (i.e., 1344 barrers). In addition, the 60 wt % composite membrane exhibits a CO2 permeability of 491.2 barrers and a CO2/N2 selectivity of 20 in mixed gas tests using CO2/N2 (50:50) as the feed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395879

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