An effect of cation functionalization on thermophysical properties of ionic liquids and solubility of glucose in them - measurements and PC-SAFT calculations

Kamil Paduszyński , Marcin Okuniewski , Urszula Domańska-Żelazna

Abstract

This contribution is concerned with thermodynamic investigation on thermophysical properties of four ionic liquids based on dicyanamide anion. The ionic liquids under study differ in substituent attached to imidazolium cation, so that an impact of terminal functional groups on the considered properties is established. Discussion is presented in terms of molecular packing and interactions (polarity, hydrogen bonding) between molecules forming system. Differential scanning calorimetry thermograms, density and viscosity were the investigated properties of pure ionic liquids. Moreover, new data sets on solubility of glucose in ionic liquids are presented. Analysis of the temperature-dependent solubility data by means of modified Van’t Hoff equation is given and apparent thermodynamic functions of dissolution are calculated. Thermodynamic modeling of the (solid + liquid) equilibrium phase diagrams was carried out by means of perturbed-chain statistical associating fluid theory (PC-SAFT). It is evidenced that consistent and accurate thermodynamic description of complex cross-associating {ionic liquid + sugar} systems can be achieved by using simple (but physically grounded) molecular schemes, assuming that two adjustable binary corrections are introduced.
Author Kamil Paduszyński ZChF
Kamil Paduszyński,,
- Department Of Physical Chemistry
, Marcin Okuniewski ZChF
Marcin Okuniewski,,
- Department Of Physical Chemistry
, Urszula Domańska-Żelazna ZChF
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2016
Vol92
Pages81-90
Publication size in sheets0.5
Keywords in EnglishIonic liquids; Glucose; Solubility; Density; Viscosity; PC-SAFT
DOIDOI:10.1016/j.jct.2015.07.019
URL http://www.sciencedirect.com/science/article/pii/S0021961415002438
Languageen angielski
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1-s2.0-S0021961415002438-main.pdf 1.41 MB
Score (nominal)35
ScoreMinisterial score [Punktacja MNiSW] = 30.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2016 = 2.726 (2) - 2016=2.784 (5)
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