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Measurement and Correlation of Liquid−Liquid Equilibria of Two Imidazolium Ionic Liquids with Thiophene and Methylcyclohexane

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Department of Chemical Engineering, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
Cite this: J. Chem. Eng. Data 2007, 52, 6, 2409–2412
Publication Date (Web):September 29, 2007
https://doi.org/10.1021/je700362q
Copyright © 2007 American Chemical Society

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    Abstract

    Equilibrium studies on the extraction of thiophene from its mixtures with methylcyclohexane using two imidazolium ionic liquids have been carried out. LLE data were obtained for mixtures of 1-methyl-3-octylimidazolium bis[trifluoromethylsulfonyl]imide or l-methyl-3-octylimidazolium tetrafluoroborate with thiophene and methylcyclohexane at atmospheric pressure and 298.15 K. Tie-line compositions were correlated using the NRTL equation, but considerable deviations from experimental data were found at high concentrations of thiophene. Distribution coefficients and selectivities were evaluated.

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     Corresponding author. Fax:  +34981528050. E-mail address: eqaaarce@ usc.es.

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