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Phase Behavior of Aqueous Biphasic Systems Composed of Ionic Liquids and Organic Salts

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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Chem. Eng. Data 2015, 60, 3, 464-470
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    Phase Behavior of Aqueous Biphasic Systems Composed of Ionic Liquids and Organic Salts
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    † Department of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
    ‡ College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524008, China
    *Tel: + 86 20 87111109; fax: + 86 20 87111109. E-mail address: [email protected] (Z.Y.).
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    Journal of Chemical & Engineering Data

    Cite this: J. Chem. Eng. Data 2015, 60, 3, 464–470
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    https://doi.org/10.1021/je500419b
    Published February 10, 2015
    Copyright © 2015 American Chemical Society
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    Abstract

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    This study evaluated the effects of ionic liquids (ILs) on the formation of aqueous biphasic systems (ABS) with organic salts. Phase diagrams, tie lines, and respective tie line lengths were determined at 298 K and atmospheric pressure. Using imidazolium-based ILs, the effects of the IL anions and salt anions, as well as the addition of dipolar aprotic solvents (DAS) on ABS formation were investigated. In general, the IL with hydrogen bond basicity ranging between 0.38 and 0.60 formed ABS with organic salts. However, those below this range were insoluble, and those above this range did not undergo phase separation. The salt anion capacity to induce ABS increased with increased valence and decreased Gibbs free energy of hydration. Moreover, the biphasic area for the IL-based ABS reduced with increased DAS concentration.

    Copyright © 2015 American Chemical Society

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    Supporting Information

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    Experimental binodal mass fraction data for the ABSs composed by each system. This material is available free of charge via the Internet at http://pubs.acs.org.

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    Cited By

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    This article is cited by 12 publications.

    1. Mafalda R. Almeida, Diana C. V. Belchior, Pedro J. Carvalho, Mara G. Freire. Liquid–Liquid Equilibrium and Extraction Performance of Aqueous Biphasic Systems Composed of Water, Cholinium Carboxylate Ionic Liquids and K2CO3. Journal of Chemical & Engineering Data 2019, 64 (11) , 4946-4955. https://doi.org/10.1021/acs.jced.9b00452
    2. Xueyan Wu, Yang Liu, Yongjie Zhao, Kit-Leong Cheong. Effect of Salt Type and Alkyl Chain Length on the Binodal Curve of an Aqueous Two-Phase System Composed of Imidazolium Ionic Liquids. Journal of Chemical & Engineering Data 2018, 63 (9) , 3297-3304. https://doi.org/10.1021/acs.jced.8b00188
    3. Elena Gómez, Irene Domínguez, Ángeles Domínguez, Eugénia A. Macedo. Ionic Liquids-Based Aqueous Biphasic Systems with Citrate Biodegradable Salts. Journal of Chemical & Engineering Data 2018, 63 (4) , 1103-1108. https://doi.org/10.1021/acs.jced.7b00849
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    10. Jianying Dai, Hui Wang, Yan Li, Zhi-Long Xiu. Imidazolium ionic liquids-based salting-out extraction of 2,3-butanediol from fermentation broths. Process Biochemistry 2018, 71 , 175-181. https://doi.org/10.1016/j.procbio.2018.05.015
    11. Jing Gao, June Liu, Yuanyi Wei, Fanghong Nie, Hongwu Ji. Effect of Amino Acids on the Phase Behavior of Aqueous Biphasic Systems Composed of 1-Butyl-3-methylimidazolium Tetrafluoroborate and Sodium Citrate. Journal of Solution Chemistry 2018, 47 (6) , 1037-1047. https://doi.org/10.1007/s10953-018-0777-1
    12. Vijetha Mogilireddy, Matthieu Gras, Nicolas Schaeffer, Helena Passos, Lenka Svecova, Nicolas Papaiconomou, João A. P. Coutinho, Isabelle Billard. Understanding the fundamentals of acid-induced ionic liquid-based aqueous biphasic system. Physical Chemistry Chemical Physics 2018, 20 (24) , 16477-16484. https://doi.org/10.1039/C8CP02862A
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    Journal of Chemical & Engineering Data

    Cite this: J. Chem. Eng. Data 2015, 60, 3, 464–470
    Click to copy citationCitation copied!
    https://doi.org/10.1021/je500419b
    Published February 10, 2015
    Copyright © 2015 American Chemical Society
    Request reuse permissions

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