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Type: Artigo de periódico
Title: Density, refraction index and vapor-liquid equilibria of N-methyl-2-hydroxyethylammonium butyrate plus (methyl acetate or ethyl acetate or propyl acetate) at several temperatures
Author: Alvarez, VH
Mattedi, S
Aznar, M
Abstract: This paper reports the densities, refraction indices, and vapor liquid equilibria for binary systems ester + N-methyl-2-hydroxyethylammonium butyrate (m-2-HEAB): methyl acetate (1) + m-2-HEAB (2), ethyl acetate (1) + m-2-HEAB and propyl acetate (1) + m-2-HEAB (2). The excess molar volumes, deviations in the refraction index, apparent molar volumes, and thermal expansion coefficients for the binary systems were fitted to polynomial equations. The Peng-Robinson equation of state, coupled with the Wong-Sandler mixing rule, is used to describe the experimental data. Since the predictive activity coefficient model COSMO-SAC is used in the Wong-Sandler mixing rule, the resulting thermodynamic model is a completely predictive one. The prediction results for the density and for the vapor-liquid equilibria have a deviation lower than 1.0% and 1.1%, respectively. (c) 2013 Elsevier Ltd. All rights reserved.
Subject: Ionic liquid
Binary mixtures
Refraction index
Vapor-liquid equilibrium
Country: Inglaterra
Editor: Academic Press Ltd- Elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.jct.2013.02.022
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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