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Author(s): Emilio J. González
Eugénia A. Macedo
Title: Influence of the number, position and length of the alkyl-substituents on the solubility of water in pyridinium-based ionic liquids
Issue Date: 2014
Abstract: In this work, the solubility of water in eight pyridinium-based ionic liquids were experimentally determined at several temperatures and atmospheric pressure, and the temperature-composition phase diagrams are reported. From these data, the effect of the number, position (positional isomers) and length of the substituents of the cation was analyzed and discussed. The obtained results indicate that water content in the studied ionic liquids increases with temperature and, in general, it decreases as the number and length of the substituents increase. As regards the position of the alkyl groups, the solubility of water decreases with the proximity of the substituents. Finally, the miscibility of water in the studied ionic liquids was satisfactorily described with the Non-Random Two-Liquid (NRTL) thermodynamic model. (C) 2014 Published by Elsevier B.V.
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/Projetos Estratégicos/PEst-C/EQB/LA0020/2013/PROJECTO ESTRATÉGICO - LA 20 - 2013-2014/LA 20
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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