Physical and excess properties of eight binary mixtures containing water and ionic liquids

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Emilio J. González (Author) FEUP; Ángeles Domínguez (Author) Other; Eugénia A. Macedo (Author) FEUP

Journal

Title: Journal of Chemical & Engineering Data

Vol. 57 No. 8

Pages: 2165-2176

ISSN: 0021-9568

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 51 Citations

ISI Web of Science

Scopus - 60 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences

Associated Projects

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

Other information

Authenticus ID: P-002-753

DOI: 10.1021/je201334p

Abstract (EN): In this paper, the density, speed of sound, and refractive index of eight binary systems (water + ionic liquid) were measured, along the whole composition range, at T = (288.15 to 308.15) K and atmospheric pressure. All binary mixtures were completely miscible in water at the studied temperatures. The ionic liquids used in this work are constituted by different cations (imidazolium, pyridinium and pyrrolidinium) and anions (trifluoromethanesulfonate, dicyanamide, methylsulfate, or ethylsulfate). From the experimental data, excess molar volumes and excess molar isentropic compressions were calculated and satisfactorily fitted using the Redlich-Kister equation. Finally, the effect of the ions and temperature on the physical and excess properties was analyzed and discussed. The obtained results show that the physical and excess properties studied in this work are dependent on water content, temperature, and structure of the ILs, especially of the anion.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12