https://repositorio.ufba.br/handle/ri/13596
Tipo: | Artigo de Periódico |
Título: | 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 |
Título(s) alternativo(s): | Journal of Chemical Thermodynamics |
Autor(es): | Alvarez, Víctor H. Silva, Silvana Mattedi e Aznar, Martin |
Autor(es): | Alvarez, Víctor H. Silva, Silvana Mattedi e Aznar, Martin |
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. Highlights ► Densities, refraction indices and VLE were measured for ester + m-2-HEAB mixtures. ► VE, apparent molar volumes and thermal expansion coefficients were calculated. ► Peng–Robinson EoS + Wong–Sandler mixing rule + COSMO-SAC predicted the data. |
Palavras-chave: | Ionic liquid Binary mixtures Density Refraction index Vapor–liquid equilibrium COSMO-SAC |
Editora / Evento / Instituição: | Journal of Chemical Thermodynamics |
Tipo de Acesso: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/13596 |
Data do documento: | 2013 |
Aparece nas coleções: | Artigo Publicado em Periódico (PPEQ) |
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
3333333.pdf | 1,02 MB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.