Alkylsulfate-based ionic liquids to separate azeotropic mixtures |
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| Authors: | A.B. Pereiro,F.J. Deive,J.M.S.S. Esperanç a,A. Rodrí guez |
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| Affiliation: | 1. Chemical Engineering Department, University of Vigo, P.O. Box 36 310, Vigo, Spain;2. Instituto de Tecnología Química e Biológica, UNL, Av. República, Apartado 127, 2780-901 Oeiras, Portugal |
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| Abstract: | The knowledge of liquid–liquid equilibria (LLE) of the ternary systems (hexane or heptane + ethanol + 1-ethyl-3-methylimidazolium ethylsulfate (EMIM EtSO4)) 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. |
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| Keywords: | Liquid&ndash liquid equilibria Ionic liquids EMIM EtSO4 Azeotropic mixtures Extraction |
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