ABSTRACT

New accurate vapour liquid equilibrium data for the ternary mixture formed by dibutyl ether (DBE), toluene and heptane at 313.15 K have been measured. A static method using an isothermal total pressure cell (Van Ness technique) has been employed. The system studied presented a slight deviation from ideal behaviour. Reduction of the experimental data has been done by Barker's method using Wohl expansion, NRTL, Wilson and UNIQUAC equations. Moreover, experimental results have been compared to predictions for the ternary system obtained from the Wilson, NRTL, UNIQUAC and UNIFAC (Dortmund) models.

Compounds

#	Formula	Name
1	C8H18O	dibutyl ether
2	C7H8	toluene
3	C7H16	heptane

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	1
POMD	2 3	Vapor or sublimation pressure, kPa ; Gas	Mole fraction - 2; Gas	Temperature, K; Gas	Gas Liquid	Closed cell (Static) method	25
POMD	2 3	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid	Temperature, K; Liquid	Gas Liquid	Calculated from Margules model	25
POMD	2 3 1	Mole fraction - 2 ; Liquid Mole fraction - 2 ; Gas Mole fraction - 1 ; Gas	Pressure, kPa; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid	Liquid Gas	Volumetric Displacement Volumetric Displacement Volumetric Displacement	78

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Phase equilibrium properties of the ternary mixture dibutyl ether + toluene + heptane at 313.15 K

Alonso-Tristan, C., Segovia, J. J., Chamorro, C. R., Martin, M. C., Villamanan Olfos, M. A.

ABSTRACT