Liquid Extraction of Benzene from Its Mixtures Using 1-Ethyl-3-methylimidazolium Ethylsulfate as a Solvent

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

Authors

Emilio J. González (Author) FEUP; Noelia Calvar (Author) FEUP; Begoña González (Author) FEUP; Ángeles Domínguez (Author) Other

Journal

Title: Journal of Chemical & Engineering Data

Vol. 55 No. 11

Pages: 4931-4936

ISSN: 0021-9568

Publisher: American Chemical Society

Indexing

ISI Web of Science

Scopus

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences

Other information

DOI: 10.1021/je100508y

Abstract (EN): In this work, the separation of benzene from cycloalkanes (cyclohexane, methylcyclohexane, and cyclooctane) was investigated by liquid extraction using the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate, [EMim][ESO4]. The liquid−liquid equilibrium (LLE) data were measured for the ternary systems formed by cycloalkane, benzene, and [EMim][ESO4] at 298.15 K and atmospheric pressure. The cloud point method was used to determine the solubility curve data, and the tie-line compositions were obtained by density measurements. The selectivity, the percent removal of aromatic, and the solute distribution ratio were calculated from the experimental LLE data. Selectivity and solute distribution ratio values were compared to those previously reported with other ionic liquids and sulfolane. Moreover, the influence of the size of the cycloalkane on the aromatic extraction was analyzed. The reliability of the experimental LLE data was tested using the Othmer−Tobias equation, and the NRTL and UNIQUAC models were used to correlate the experimental LLE data.

Language: English

Type (Professor's evaluation): Scientific