ABSTRACT

Vapor liquid equilibrium (VLE) data of the binary systems tetrahydrofuran + cyclohexane, tetrahydrofuran + 1,2-propanediol, and cyclohexane + 1,2-propanediol were reported at 101.3 kPa, as well as the ternary system tetrahydrofuran + cyclohexane + 1,2-propanediol. The results showed that the 1,2-propanediol was a good solvent which can break the binary azeotrope and effectively improve the relative volatility for the system of tetrahydrofuran and cyclohexane. Then, the equations of nonrandom two-liquid (NRTL), universal quasichemical (UNIQUAC), and Wilson were used to correlate the activity coefficients, and the results indicate that the NRTL model provides the best description of the phase equilibrium data.

Compounds

#	Formula	Name
1	C4H8O	tetrahydrofuran
2	C6H12	cyclohexane
3	C3H8O2	1,2-propanediol

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	1 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	1 2	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Gas Liquid	Chromatography	22
POMD	3 1	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	3 1	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Gas Liquid	Chromatography	22
POMD	3 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	22
POMD	3 2	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Gas Liquid	Chromatography	22
POMD	3 1 2	Mole fraction - 2 ; Liquid Mole fraction - 2 ; Gas Mole fraction - 1 ; Gas	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Chromatography Chromatography Chromatography	30

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

Vapor Liquid Equilibrium for Ternary and Binary Mixtures of Tetrahydrofuran, Cyclohexane, and 1,2-Propanediol at 101.3 kPa

Zhang, Z.[Zhigang], Jiang, P.[Peng], Huang, D.[Donghao], Lv, M.[Ming], Du, Y.[Yan], Li, W.[Wenxiu]

ABSTRACT