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

Marta S. Calado, Adriana S.h. Branco, Vesna Najdanovic-visak, Zoran P. Visak

Research output: Contribution to journalArticle

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.
Original languageEnglish
Pages (from-to)154-159
JournalThe Journal of Chemical Thermodynamics
Volume70
Early online date7 Nov 2013
DOIs
Publication statusPublished - 1 Mar 2014

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Ionic Liquids
Ionic liquids
Polyethylene glycols
glycols
ethylene
solubility
Solubility
Thermodynamics
thermodynamics
ferulic acid
Liquids
liquids
Acids
acids
Vanillic Acid
Thymol
Caffeine
thymol
Activity coefficients
semiempirical equations

Cite this

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title = "Solubility of high-value compounds in environmentally friendly solvents-liquid poly(ethylene glycol) and ionic liquids: Experimental study and thermodynamic analysis",
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.",
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year = "2014",
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Solubility of high-value compounds in environmentally friendly solvents-liquid poly(ethylene glycol) and ionic liquids: Experimental study and thermodynamic analysis. / Calado, Marta S.; Branco, Adriana S.h.; Najdanovic-visak, Vesna; Visak, Zoran P.

In: The Journal of Chemical Thermodynamics, Vol. 70, 01.03.2014, p. 154-159.

Research output: Contribution to journalArticle

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T1 - Solubility of high-value compounds in environmentally friendly solvents-liquid poly(ethylene glycol) and ionic liquids: Experimental study and thermodynamic analysis

AU - Calado, Marta S.

AU - Branco, Adriana S.h.

AU - Najdanovic-visak, Vesna

AU - Visak, Zoran P.

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