Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Full text
Author(s):
Alvarez, V. H. [1] ; Mattedi, S. [2] ; Aznar, M. [3]
Total Authors: 3
Affiliation:
[1] Univ Alberta, Dept Agr Food & Nutr Sci, Edmonton, AB T6G 2P5 - Canada
[2] Fed Univ Bahia UFBA, Polytech Sch, Dept Chem Engn, BR-40210630 Salvador, BA - Brazil
[3] State Univ Campinas UNICAMP, Sch Chem Engn, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 62, p. 130-141, JUL 2013.
Web of Science Citations: 8
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. (AU)