Solubility of high-value compounds in environmentally friendly solvents-liquid poly(ethylene glycol) and ionic liquids:experimental study and thermodynamic analysis

Calado, Marta S. and Branco, Adriana S. H. and Najdanovic-Visak, Vesna and Visak, Zoran P. (2014) Solubility of high-value compounds in environmentally friendly solvents-liquid poly(ethylene glycol) and ionic liquids:experimental study and thermodynamic analysis. Journal of Chemical Thermodynamics, 70. pp. 154-159. ISSN 0021-9614

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Abstract

In this work the (solid + liquid) equilibria (SLE) of the solution of sustainable solvents with five high-value compounds, thymol, ferulic acid, vanillic acid, caffeic acid and caffeine, was investigated. The sustainable solvents studied were liquid poly(ethylene glycol) of average molecular mass 200 and 400 – (PEG200 and PEG400), respectively as well as imidazolium ionic liquids with bistriflamide and triflate anions ([C4mim][NTf2] and [C4mim][OTf]). The obtained SLE data were correlated using the semi-empirical equation proposed by Grant. The activity coefficients of the studied solutes were calculated. Based on these correlations and calculations as well as on the thermo-physical properties of the pure constituents, the SLE behavior of the studied solutions was analyzed and discussed.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Chemical Thermodynamics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1606
Subjects:
ID Code:
70066
Deposited By:
Deposited On:
23 Jul 2014 08:04
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:56