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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Noélia Calvar (Autor) FEUP; Elena Gómez (Autor) FEUP; Ángeles Domínguez (Autor) Outra; Eugénia A. Macedo (Autor) FEUP

Revista

Título: Journal of Chemical Thermodynamics

Vol. 43

Páginas: 1256-1262

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge - 14 Citações

ISI Web of Science

Scopus - 17 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Projetos Associados

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

Outras Informações

ID Authenticus: P-002-PHP

DOI: 10.1016/j.jct.2011.03.012

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7