Vapour pressures, osmotic and activity coefficients for binary mixtures containing (1-ethylpyridinium ethylsulfate plus several alcohols) at T=323.15 K

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Noélia Calvar (Autor) FEUP; Elena Gómez (Autor) FEUP; Ángeles Domínguez (Autor) Outra; Eugénia A. Macedo (Autor) FEUP

Revista

Título: Journal of Chemical Thermodynamics

Vol. 42

Páginas: 625-630

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge - 16 Citações

ISI Web of Science

Scopus - 19 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-003-71N

DOI: 10.1016/j.jct.2009.12.001

Abstract (EN): Osmotic coefficients of binary mixtures containing several primary and secondary alcohols (1-propanol, 2-propanol, 1-butanol, 2-butanol, and 1-pentanol) and the pyridinium-based ionic liquid 1-ethylpyridinium ethylsulfate were determined at T = 323.15 K using the vapour pressure osmometry technique. From the experimental results, vapour pressure and activity coefficients can be determined. For the correlation of osmotic coefficients, the extended Pitzer model modified by Archer, and the modified NRTL (MNRTL) model were used, obtaining deviations lower than 0.017 and 0.047, respectively. The mean molal activity coefficients and the excess Gibbs free energy for the binary mixtures studied were determined from the parameters obtained with the extended Pitzer model modified by Archer.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6