Liquid–liquid equilibria for multicomponent mixtures of 2,2-dimethyl-1,3-dioxolane with n-heptane, toluene, ethanol and water

Liquid–liquid equilibria for ternary mixtures of 2,2-dimethyl-1,3-dioxolane-4-methanol with n-heptane, toluene, ethanol and water

“…Phase behavior modeling for the ternary systems under study was carried out applying the NRTL [18] and UNIFAC [19] models-like in our preceding study for solutions of DMD [1].…”

“…The failure is obviously due to ignoring the intramolecular interactions of two conjugated oxygen atoms in 1,3-dioxolane molecule and in its derivatives. In [1] new UNIFAC parameters were estimated for interactions between the ether group "DCH 2 O" in cyclic diether (DMD) and other groups. Table 6 UNIFAC group assignment in this study.…”

“…In our preceding work [1] the results of the LLE study were given for multicomponent mixtures of 2,2-dimethyl-1,3-dioxolane (DMD) with n-heptane, toluene, ethanol and water. New UNIFAC parameters were estimated to describe interactions of DMD ether groups with water, OH and CH2 groups.…”

“…In particular, alkyl-derivatives of 1,3-dioxolane-4-methanol have appeared to be effective and nontoxic icing inhibitors [2,3]; they are considered as perspective additives to gasoline and biofuels increasing their phase stability (the range of homogeneity in water containing systems). A review of the phase equilibria studies for liquid mixtures containing 1,3-dioxolane or its derivatives was given in our preceding paper [1].…”