Physico-chemical properties and phase behaviour of the ionic liquid-β-cyclodextrin complexes

Marek Rogalski , Ali Modaresi , Pierre Magri , Fabrice Mutelet , Aleksandra Grudziszko , Michał Wlazło , Urszula Domańska-Żelazna

Abstract

The solubility of β-cyclodextrin (β-CD) in ionic liquids (ILs) and the activity coefficients at infinite dilution () of more than 20 solutes (alkanes, aromatic hydrocarbons, alcohols) were measured in four chosen ionic liquids, their mixtures with β-CD, and in the β-CD at high temperatures from 338 to 398 K using the inverse gas chromatography. The intermolecular interactions, inclusion complexes and the possible increasing of the solubility of β-CD in water using the IL are presented. The solubility of β-CD in ten chosen hydrophobic ILs at the temperature T = 423 K was detected. The solid-liquid phase diagrams (SLE) of {IL (1) + β-CD (2)} binary systems at the high mole fraction of the IL were measured for three systems (1-ethyl-3-methylimidazolium chloride, [EMIM][Cl], 1-ethyl-3-methylimidazolium bromide, [EMIM][Br]; and for 1-butyl-3-methylimidazolium chloride, [BMIM][Cl]). The eutectic points were determined at the high IL concentration for all binary systems. The intermolecular interaction and the possibility of inclusion complexes of the IL and/or solvents with β-CD were discussed. The infrared spectroscopy, IR was used for the description of the intermolecular interactions in the (β-CD + IL) systems. It was shown via the activity coefficients at infinite dilution results that the inclusion complexes are dependent on the temperature. The addition of β-CD to the IL does not improve the selectivity of the separation of the aliphatics from aromatics.
Author Marek Rogalski - [Université de Lorraine]
Marek Rogalski,,
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, Ali Modaresi
Ali Modaresi,,
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, Pierre Magri
Pierre Magri,,
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, Fabrice Mutelet
Fabrice Mutelet,,
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, Aleksandra Grudziszko (FC / DPC)
Aleksandra Grudziszko,,
- Department Of Physical Chemistry
, Michał Wlazło (FC / DPC)
Michał Wlazło,,
- Department Of Physical Chemistry
, Urszula Domańska-Żelazna (FC / DPC)
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesInternational Journal of Molecular Sciences, ISSN 1422-0067
Issue year2013
Vol14
No8
Pages16638-16665
Publication size in sheets1.35
Keywords in Englishβ-cyclodextrin-ionic liquid systems; experimental solid-liquid equilibrium; activity coefficients at infinite dilution; intermolecular interactions
ASJC Classification1604 Inorganic Chemistry; 1605 Organic Chemistry; 1606 Physical and Theoretical Chemistry; 1706 Computer Science Applications; 1607 Spectroscopy; 1312 Molecular Biology; 2700 General Medicine; 1503 Catalysis
DOIDOI:10.3390/ijms140816638
URL http://www.mdpi.com/1422-0067/14/8/16638
Languageen angielski
File
ijms-14-16638-v2.pdf 304.5 KB
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 30.0, 01-02-2020, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 01-02-2020, ArticleFromJournal
Publication indicators Scopus Citations = 5; WoS Citations = 5; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.1; WoS Impact Factor: 2013 = 2.339 (2) - 2013=2.721 (5)
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