ABSTRACT

This study aims to investigate the efficiency of dimethyl phthalate (DMP), having low water solubility, low density, and a high boiling point compared to alkanes, as a solvent to extract toluene from its multicomponent hydrocarbon mixtures. Liquid-liquid equilibrium (LLE) data of the solubility (binodal) curves and tie-line end compositions were examined for mixtures of {heptane or hexane or cyclohexane (1) + toluene (2) + DMP (3)} at T = 298.15 K and 101.3 kPa. The reliability of the experimental tie-line data was verified by using the Othmer-Tobias correlation. Distribution coefficients and separation factors were evaluated for the immiscibility region. The experimental tie-line data were correlated by the universal quasichemical activity coefficient (UNIQUAC) equation and also predicted with the universal functional group activity coefficient (UNIFAC) model. The experimental data were compared with the calculated results.

Compounds

#	Formula	Name
1	C7H16	heptane
2	C6H14	hexane
3	C6H12	cyclohexane
4	C7H8	toluene
5	C10H10O4	dimethyl 1,2-benzenedicarboxylate

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	4 5 1	Mass fraction - 4 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 4 ; Liquid mixture 2	Mass fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	5
POMD	4 5 1	Mass fraction - 4 ; Liquid mixture 1	Mass fraction - 1; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	TITR:UFactor:2	8
POMD	4 2 5	Mass fraction - 4 ; Liquid mixture 1	Mass fraction - 2; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	TITR:UFactor:2	8
POMD	4 2 5	Mass fraction - 2 ; Liquid mixture 1 Mass fraction - 2 ; Liquid mixture 2 Mass fraction - 4 ; Liquid mixture 2	Mass fraction - 4; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	4
POMD	4 3 5	Mass fraction - 4 ; Liquid mixture 1 Mass fraction - 4 ; Liquid mixture 2 Mass fraction - 3 ; Liquid mixture 2	Mass fraction - 3; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	4
POMD	4 3 5	Mass fraction - 4 ; Liquid mixture 1	Mass fraction - 3; Liquid mixture 1	Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	TITR:UFactor:2	6

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

Phase Equilibria for Liquid Mixtures of (an Alkane + Toluene + Dimethyl Phthalate)

Sahin, S.[Selin]

ABSTRACT