Please use this identifier to cite or link to this item:
Author(s): Noélia Calvar
Elena Gómez
Ángeles Domínguez
Eugénia A. Macedo
Title: Determination and modelling of osmotic coefficients and vapour pressures of binary systems 1-and 2-propanol with C(n)MimNTf(2) ionic liquids (n=2, 3, and 4) at T=323.15 K
Issue Date: 2011
Abstract: The osmotic and activity coefficients and vapour pressures of binary mixtures containing 1-propanol, or 2-propanol and imidazolium-based ionic liquids with bis(trifluoromethylsulfonyl)imide as anion (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, C(2)MimNTf(2), 1-methyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide, C(3)MimNTf(2), and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, C(4)MimNTf(2)) were determined at T=323.15 K using the vapour pressure osmometry technique. The experimental osmotic coefficients were correlated using the extended Pitzer model modified by Archer and the MNRTL model, obtaining standard deviations lower than 0.033 and 0.064, respectively. The mean molal activity coefficients and the excess Gibbs free energy for the mixtures studied were calculated from the parameters of the extended Pitzer model modified by Archer. Besides the effect of the alkyl-chain of the cation, the effect of the anion can be assessed comparing the experimental results with those previously obtained for imidazolium ionic liquids with sulphate anions. (C) 2011 Published by Elsevier Ltd.
Subject: Ciências Tecnológicas, Ciências da engenharia e tecnologias
Technological sciences, Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/PEst-C/EQB/LA0020/2011/Projeto Estratégico-LA 20 - 2011-2012/LA 20
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

Files in This Item:
File Description SizeFormat 
  Restricted Access
379.36 kBAdobe PDF    Request a copy from the Author(s)

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.