Investigation of the solute-solute and solute-solvent interactions in ternary {saccharide + ionic liquid + water} systems

Measurement and Modeling of Solubility of Galactose in Aqueous Ionic Liquids, 1-Butyl-3-Methyl Imidazolium Bromide, 1-Hexyl-3-Methyl Imidazolium Bromide and 1-Butyl-3-Methylimidazolium Chloride at T = (298.15 And 308.15) K

“…To achieve this goal, a systematic study of thermophysical properties is required. In this work, in continuation to our previous papers, [13][14][15][16][17][18][19][20] the solubility values of galactose in aqueous ionic liquids, 1-butyl-3-methyl imidazolium bromide, [BMIm]Br, 1-hexyl-3-methyl imidazolium bromide, [HMIm]Br and 1-butyl-3-methylimidazolium chloride [BMIm]Cl have been measured at different ionic liquid mole fractions at T = (298.15 and 308.15) K using the gravimetric method. To model the experimental solubility data of galactose in water and aqueous ionic liquid solutions, models such as Wilson, 21 NRTL, 22 modified NRTL, 23 NRF-NRTL 24 and UNIQUAC 25 were used.…”

“…This can be discussed based on different hydration behavior of ionic liquids. In our previous studies 15,16,19 we showed a higher affinity for water in ionic liquids having shorter alkyl chain. Our results showed that the activity coefficient values of ionic liquid [BMIm]Br in water are higher than the activity coefficient values of ionic liquid [HMIm]Br in water.…”

“…Our results show that the solubility values in the presence of ionic liquid [BMIm]Br are greater than the corresponding values in presence of ionic liquid [BMIm]Cl. In our previous study, 19 we showed that an ionic liquid with smaller anion's size has stronger interaction with water than the ionic liquid with larger anion's size. Our results showed that the activity coefficient values of ionic liquid [BMIm]Cl in water are higher than the activity coefficient values of ionic liquid [BMIm]Br in water.…”

“…Our results showed that the activity coefficient values of ionic liquid [BMIm]Br in water are higher than the activity coefficient values of ionic liquid [HMIm]Br in water. 15,16,19 It means that [BMIm]Br-water interactions are stronger than [HMIm]Br-water interactions. 15,16,19 In ternary systems, it seems that ionic liquids with shorter alkyl chain have fewer tendencies to interact with galactose due to their higher tendency to interact with water.…”

“…15,16,19 It means that [BMIm]Br-water interactions are stronger than [HMIm]Br-water interactions. 15,16,19 In ternary systems, it seems that ionic liquids with shorter alkyl chain have fewer tendencies to interact with galactose due to their higher tendency to interact with water. This behavior is consistent with the results obtained from vapor-liquid equilibrium behavior of {sucrose / fructose + [BMIm]Br / [HMIm]Br + water} systems in regard with sugar-ionic liquid interactions.…”