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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Emilio J. González (Autor) FEUP; Ángeles Domínguez (Autor) Outra; Eugénia A. Macedo (Autor) FEUP

Revista

Título: Journal of Chemical & Engineering Data

Vol. 57 Nº 8

Páginas: 2165-2176

ISSN: 0021-9568

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 51 Citações

ISI Web of Science

Scopus - 60 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas

Projetos Associados

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

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12