Excess molar properties of ternary system (ethanol+water+1,3-dimethylimidazolium methylsulphate) and its binary mixtures at several temperatures

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Elena Gómez (Autor) FEUP; Begoña González (Autor) FEUP; Noelia Calvar (Autor) FEUP; Ángeles Domínguez (Autor) Outra

Revista

Título: Journal of Chemical Thermodynamics

Vol. 40

Páginas: 1208-1216

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Science

Scopus

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-00H-B3A

DOI: 10.1016/j.jct.2008.04.006

Abstract (EN): The density, dynamic viscosity, and refractive index of the ternary system (ethanol + water + 1,3-dimethylimidazolium methylsulphate) at T = 298.15 K and of its binary systems 1,3 dimethylimidazolium methylsulphate with ethanol and with water at several temperatures T = (298.15, 313.15, and 328.15) K and at 0.1 MPa have been measured over the whole composition range. From these physical properties, excess molar volumes, viscosity deviations, refractive index deviations, and excess free energy of activation for the binary systems at the above mentioned temperatures, were calculated and fitted to the Redlich–Kister equation to determine the fitting parameters and the root-mean-square deviations. For the ternary system, the excess properties were calculated and fitted to Cibulka, Singh et al., and Nagata and Sakura equations. The ternary excess properties were predicted from binary contributions using geometrical solution models.

Idioma: Inglês

Tipo (Avaliação Docente): Científica