TY - JOUR
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.
PY - 2014/3/1
Y1 - 2014/3/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84888600084&partnerID=MN8TOARS
UR - https://www.sciencedirect.com/science/article/pii/S0021961413004102?via%3Dihub
U2 - 10.1016/j.jct.2013.10.036
DO - 10.1016/j.jct.2013.10.036
M3 - Article
SN - 0021-9614
VL - 70
SP - 154
EP - 159
JO - The Journal of Chemical Thermodynamics
JF - The Journal of Chemical Thermodynamics
ER -