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Ionic liquid-alkane association in dilute solutions

Berthod, Alain and Kozak, John J. and Anderson, Jared L. and Ding, Jie and Armstrong, Daniel W. (2007) Ionic liquid-alkane association in dilute solutions. Theoretical Chemistry Accounts, 117 (1). pp. 127-135. ISSN 1432-881X. doi:10.1007/s00214-006-0155-8.

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Enthalpies and entropies of transfer were measured by gas chromatography for dilute solutions of a homologous series of eight even n-alkanes (from octane to docosane) into six different ionic liquids (ILs) (namely, 1-butyl-3-methylimidazolium chloride, bromide, iodide, triflate and hexafluorophosphate; plus N-butylmethylpyridinium bis {(trifluoromethyl) sulfonyl}-imide) over the 80–150 °C temperature range, all ILs being in the liquid state. Over a narrow concentration range, the entropic change may be consistent with a solvophobic association model of n-alkanes in ILs. A very simple model is proposed to account for the thermodynamic data. This approach can be used to approximate interionic distances and possible dielectric constants for ILs. Although the model may have some use in dilute alkane-IL solutions, more sophisticated models, particularly for the enthalpic contributions, are desirable.

Item Type:Article
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Ding, Jie0000-0002-3584-6140
Additional Information:© 2006 Springer-Verlag. Received 02 December 2005; Accepted 19 May 2006; Published 13 July 2006. This research was supported by National Institutes of Health Grant – NIH R01 430-21-23. AB thanks the Centre National de la Recherche Scientifique UMR5180 (P. Lanteri) for continuous support.
Funding AgencyGrant Number
NIHR01 430-21-23
Centre National de la Recherche Scientifique (CNRS)UMR5180
Subject Keywords:Molten salts; Ionic liquid; Thermodynamics; Hydrophobic association; Alkanes
Issue or Number:1
Record Number:CaltechAUTHORS:20200323-131152068
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Official Citation:Berthod, A., Kozak, J.J., Anderson, J.L. et al. Ionic liquid-alkane association in dilute solutions. Theor Chem Acc 117, 127–135 (2007).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102052
Deposited By: Tony Diaz
Deposited On:23 Mar 2020 23:22
Last Modified:16 Nov 2021 18:08

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