ABSTRACT

Liquid-liquid equilibrium (LLE) data for ternary systems of (benzene + cyclohexane + N-methylimidazole (MIM), or N-ethylimidazole (EIM), or N-methylimidazolium dibutylphosphate [HMIM][DBP]) were measured at 298.2 K and atmospheric pressure, and the experimental data were correlated using the nonelectrolyte NRTL equation. It was found that the selectivity of MIM, EIM, and [HMIM][DBP] for benzene is in the range of (413.6 to 10.7), (5.4 to 1.5), and (2.3 to 1.3), respectively. The variation of extractive performance of these solvents for the benzene component from its cyclohexane mixture is interpreted in terms of the molecular structure and corresponding variation of intermolecular interaction involved, e.g., polar-induced polar interaction, o-o complexation, and dispersive interaction among different components.

Compounds

#	Formula	Name
1	C6H6	benzene
2	C6H12	cyclohexane
3	C4H6N2	1-methylimidazole
4	C5H8N2	1-ethyl-1H-imidazole
5	C12H25N2O4P	N-methylimidazolium dibutylphosphate

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1 2 3	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 1; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	13
POMD	1 2 4	Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	8
POMD	1 2 5	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 1; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	9

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Ternary Liquid-Liquid Equilibria Measurement for Benzene + Cyclohexane + N-Methylimidazole, or N-Ethylimidazole, or N-Methylimidazolium Dibutylphosphate at 298.2 K and Atmospheric Pressure

Wang, R.[Ruijie], Li, C.[Chunxi], Meng, H.[Hong], Wang, J.[Junfeng], Wang, Z.[Zihao]

ABSTRACT