ABSTRACT

Isothermal vapor liquid equilibria at 333.15K and 353.15K for four binary mixtures of benzene + nonane, toluene + o-xylene, m-xylene + sulfolane and o-xylene + sulfolane have been obtained at pressures ranged from 0 to 101.3 kPa over the whole composition range. The Wilson, NRTL and UNIQUAC activity coefficient models have been employed to correlate experimental pressures and liquid mole fractions. The non-ideal behavior of the vapor phase has been considered by using the Peng Robinson equation of state in calculating the vapor mole fraction. Liquid and vapor densities of these solutions were measured by using two vibrating tube densitometers. The excess molar volumes of the liquid phase were also determined. The P x y phase behavior indicates that mixtures of m-xylene + sulfolane, o-xylene + sulfolane and benzene + nonane present large positive deviations from the ideal solution and belong to endothermic mixings because their excess Gibbs energies are positive.

Compounds

#	Formula	Name
1	C6H6	benzene
2	C9H20	nonane
3	C8H10	1,2-dimethylbenzene
4	C7H8	toluene
5	C8H10	1,3-dimethylbenzene
6	C4H8O2S	sulfolane

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	Phase	Method	#Points
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	2
POMD	1	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	2
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	2
POMD	2	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	2
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	4
POMD	3	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	4
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	4
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	4	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	2
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	2
POMD	5	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	5	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	2
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	2
POMD	6	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	2
POMD	6	Mass density, kg/m3 ; Gas	Temperature, K; Gas	Gas Liquid	Vibrating tube method	2
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Liquid Gas	Vibrating tube method	2
POMD	1 2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	Closed cell (Static) method	25
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	Vibrating tube method	25
POMD	1 2	Mass density, kg/m3 ; Gas	Temperature, K; Gas Mole fraction - 1; Liquid	Gas Liquid	Vibrating tube method	25
POMD	3 4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Liquid Gas	Closed cell (Static) method	22
POMD	3 4	Mass density, kg/m3 ; Gas	Temperature, K; Gas Mole fraction - 4; Liquid	Gas Liquid	Vibrating tube method	22
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Liquid Gas	Vibrating tube method	22
POMD	5 6	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Liquid Gas	Closed cell (Static) method	30
POMD	5 6	Mass density, kg/m3 ; Gas	Temperature, K; Gas Mole fraction - 5; Liquid	Gas Liquid	Vibrating tube method	30
POMD	5 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Liquid Gas	Vibrating tube method	30
POMD	3 6	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Liquid Gas	Closed cell (Static) method	30
POMD	3 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Liquid Gas	Vibrating tube method	30
POMD	3 6	Mass density, kg/m3 ; Gas	Temperature, K; Gas Mole fraction - 3; Liquid	Gas Liquid	Vibrating tube method	30

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor liquid equilibria and density measurement for binary mixtures of toluene, benzene, o-xylene, m-xylene, sulfolane and nonane at 333.15K and 353.15K

Chen, W.-K.[Wei-Kuan], Lee, K.-J.[Kun-Jung], Ko, J.-W.[Jing-Wei], Chang, C.-M. J.[Chieh-Ming J.], Lee, L. -[Liang-sun]

ABSTRACT