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

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Elena Gómez (Author) FEUP; Begoña González (Author) FEUP; Noelia Calvar (Author) FEUP; Ángeles Domínguez (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 40

Pages: 1208-1216

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Science

Scopus

COMPENDEX

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific