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

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Noélia Calvar (Author) FEUP; Elena Gómez (Author) FEUP; Ángeles Domínguez (Author) Other; Eugénia A. Macedo (Author) FEUP

Journal

Title: Journal of Chemical Thermodynamics

Vol. 42

Pages: 625-630

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 16 Citations

ISI Web of Science

Scopus - 19 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6