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

Autor(es)

Alvarez, V. H. ^[1] ; Mattedi, S. ^[2] ; Aznar, M. ^[3]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 62, p. 130-141, JUL 2013.
• Citações Web of Science: 8

Resumo

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)

• Processo FAPESP: 06/03711-1 - Termodinamica e aplicacoes dos liquidos ionicos.
• Beneficiário: Victor Hugo Alvarez Alvarez
• Modalidade de apoio: Bolsas no Brasil - Doutorado