ABSTRACT

The liquid-liquid equilibrium for the quaternary system toluene + water + propionic acid + ethyl acetate was measured at 25 deg C and atmospheric pressure. Binodal curves, tie lines, a distribution curve, and a selectivity curve for the quaternary system have been determined in order to investigate the effect of using binary solvents toluene and ethyl acetate on extracting propionic acid from aqueous solution. In addition, these experimental tie-line data were also compared with the values predicted by the UNIFAC model. It was shown that the UNIFAC model was capable of predicting the compositions of these quaternary systems within an average rmsd of 3.21 mol %.

Compounds

#	Formula	Name
1	C3H6O2	propanoic acid
2	C7H8	toluene
3	H2O	water
4	C4H8O2	ethyl acetate

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 - 3 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 3; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	6
POMD	1 2 3	Mole fraction - 3 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	13
POMD	1 4 3	Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 3 ; Liquid mixture 1 Mole fraction - 4 ; Liquid mixture 1	Mole fraction - 3; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	5
POMD	1 4 3	Mole fraction - 3 ; Liquid mixture 1	Mole fraction - 4; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	13
POMD	2 4 3	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 4; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	4
POMD	2 4 3	Mole fraction - 4 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	12
POMD	2 3	Mole fraction - 3 ; Liquid mixture 1		Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	2
POMD	2 3	Mole fraction - 2 ; Liquid mixture 1		Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	2
POMD	4 3	Mole fraction - 3 ; Liquid mixture 1		Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	2
POMD	4 3	Mole fraction - 4 ; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1

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

Liquid-Liquid Equilibrium for the Quaternary System Toluene + Water + Propionic Acid + Ethyl Acetate at 25 deg C and Atmospheric Pressure

Kim, J.-K.[Jae-Kyung], Park, D. W.[Dong Won]

ABSTRACT