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Type: Artigo de periódico
Title: Density, Refraction Index, And Vapor-liquid Equilibria Of N -methyl-2-hydroxyethylammonium Hexanoate Plus (methyl Acetate, Ethyl Acetate, Or Propyl Acetate) At Several Temperatures
Author: Alvarez V.H.
Mattedi S.
Aznar M.
Abstract: This paper reports the densities, refraction indices, and vapor liquid equilibria for binary systems ester + n-methyl-2-hydroxyethylammonium hexanoate (m-2-HEAH): methyl acetate (1) + m-2-HEAH (2), ethyl acetate (1) + m-2-HEAH, and propyl acetate (1) + m-2-HEAH (2). The excess molar volumes, deviations in the refraction index, apparent molar volume, and thermal expansion coefficient 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 1.6% and 1.1%, respectively. © 2012 American Chemical Society.
Rights: fechado
Identifier DOI: 10.1021/ie302343v
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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