Vapor–Liquid Equilibria for the Ternary System Ethanol + Water + 1-Ethyl-3-methylimidazolium Ethylsulfate and the Corresponding Binary Systems Containing the Ionic Liquid at 101.3 kPa

• Published in: Journal of chemical and engineering data Vol. 53; no. 3; pp. 820 - 825
• Main Authors: Calvar, Noelia, González, Begoña, Gómez, Elena, Domínguez, Ángeles
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.03.2008
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Liquid-vapor equilibria; Phase equilibria; Water; Ternary system; Ethanol; Binary system; Liquid vapor equilibrium; Alcohol; Phase equilibrium; Ionic liquid
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je700710d

In this work, experimental data of isobaric vapor–liquid equilibria (VLE) for the ternary system ethanol + water + 1-ethyl-3-methylimidazolium ethylsulfate (EMISE) and for the corresponding binary systems containing the ionic liquid (ethanol + EMISE, water + EMISE) were carried out at 101.3 kPa. VLE data of binary systems were correlated using the e-NRTL and NRTL equations. With the obtained parameters, we can predict the behavior of the ternary system. In addition, the ternary system was correlated using the NRTL equation. A study of the evolution of the ethanol + water azeotrope composition with different amounts of ionic liquid was made.