Alkylsulfate-based ionic liquids to separate azeotropic mixtures

The knowledge of liquid–liquid equilibria (LLE) of the ternary systems (hexane or heptane + ethanol + 1-ethyl-3-methylimidazolium ethylsulfate (EMIM EtSO 4)) is essential for the separation of alkanes from their azeotropic mixtures with ethanol. The experimental LLE have been determined at 298.15 K...

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Veröffentlicht in:	Fluid phase equilibria 2010-04, Vol.291 (1), p.13-17
Hauptverfasser:	Pereiro, A.B., Deive, F.J., Esperança, J.M.S.S., Rodríguez, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Atmospheric pressure Azeotropic mixtures Chemistry Computer programs Correlation EMIM EtSO 4 Ethanol Ethyl alcohol Exact sciences and technology Extraction General and physical chemistry Ionic liquids Liquid-liquid equilibria Liquid-liquid extraction Mathematical analysis Phase equilibria Simulation Solvents
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Beschreibung
Zusammenfassung:	The knowledge of liquid–liquid equilibria (LLE) of the ternary systems (hexane or heptane + ethanol + 1-ethyl-3-methylimidazolium ethylsulfate (EMIM EtSO 4)) is essential for the separation of alkanes from their azeotropic mixtures with ethanol. The experimental LLE have been determined at 298.15 K and atmospheric pressure. Experimental LLE are correlated using NRTL equation. The solvent capacity of the IL is compared with others aiming to analyze the efficiency of these molten salts used as entrainers. The extraction processes with this IL are simulated using conventional software. A comparison of the alkylsulfate-based IL's ability for the extraction process, determined from the simulation results, is enclosed.
ISSN:	0378-3812 1879-0224
DOI:	10.1016/j.fluid.2009.12.016