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Liquid − liquid equilibrium of mixtures of imidazolium - based ionic liquids with propanediols or glycerol / Carlos A. S. Trindade in Industrial & engineering chemistry research, Vol. 49 N° 10 (Mai 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4850-4857 Titre : Liquid − liquid equilibrium of mixtures of imidazolium - based ionic liquids with propanediols or glycerol Type de document : texte imprimé Auteurs : Carlos A. S. Trindade, Auteur ; Zoran P. Visak, Auteur ; Rafat Bogel-Lukasik, Auteur Année de publication : 2010 Article en page(s) : pp. 4850-4857 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ionic  liquid  Phase  equilibrium  Liquid  liquid  equilibrium Résumé : In this work, liquid-liquid equilibria (LLE) of solutions of imidazolium-based ionic liquids-with either bistriflamide ([Cnmim][NTf2], n = 2 and n = 10) or triflate anions ([C2mim][OTf]), with 1-propanol, 1,2-propanediol, 1,3-propanediol, and glycerol (1,2,3-propanetdol)-were studied. The obtained phase diagrams show a remarkable difference in solvation properties between ionic liquids with NTf2 or OTf anions toward the aforementioned alcohols: although [C2mim][NTf2] constantly exhibited partial miscibility, [C2mim][OTf was always completely miscible. This divergence is likely to be related to the distinct abilities of NTf2 and OTf anions toward hydrogen bonding. It was also found that the shorter cation alkyl chain in the [Cnmim][NTf2] ionic liquids provided better solubility with both propanediols and glycerol. In addition, the solubility of 1,3-propanediol in both [C2mim][NTf2] and [C10mim][NTf2] was much lower than that of 1,2-propanediol From the application point of view, the present results show that mixtures of [C2mim][NTf2] and [C2mim][OTf ionic liquids may achieve the separation of 1,3-propanediol from glycerol. The LLE experimental results were correlated using a model based on the Peng-Robinson equation of state (PR EoS) combined with th< Mathias—Klotz—Prausnitz (MKP) mixing rule. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=22797480 [article] Liquid − liquid equilibrium of mixtures of imidazolium - based ionic liquids with propanediols or glycerol [texte imprimé] / Carlos A. S. Trindade, Auteur ; Zoran P. Visak, Auteur ; Rafat Bogel-Lukasik, Auteur . - 2010 . - pp. 4850-4857. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4850-4857 Mots-clés : Ionic  liquid  Phase  equilibrium  Liquid  liquid  equilibrium Résumé : In this work, liquid-liquid equilibria (LLE) of solutions of imidazolium-based ionic liquids-with either bistriflamide ([Cnmim][NTf2], n = 2 and n = 10) or triflate anions ([C2mim][OTf]), with 1-propanol, 1,2-propanediol, 1,3-propanediol, and glycerol (1,2,3-propanetdol)-were studied. The obtained phase diagrams show a remarkable difference in solvation properties between ionic liquids with NTf2 or OTf anions toward the aforementioned alcohols: although [C2mim][NTf2] constantly exhibited partial miscibility, [C2mim][OTf was always completely miscible. This divergence is likely to be related to the distinct abilities of NTf2 and OTf anions toward hydrogen bonding. It was also found that the shorter cation alkyl chain in the [Cnmim][NTf2] ionic liquids provided better solubility with both propanediols and glycerol. In addition, the solubility of 1,3-propanediol in both [C2mim][NTf2] and [C10mim][NTf2] was much lower than that of 1,2-propanediol From the application point of view, the present results show that mixtures of [C2mim][NTf2] and [C2mim][OTf ionic liquids may achieve the separation of 1,3-propanediol from glycerol. The LLE experimental results were correlated using a model based on the Peng-Robinson equation of state (PR EoS) combined with th< Mathias—Klotz—Prausnitz (MKP) mixing rule. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=22797480