ABSTRACT

The vapour pressures of liquid hex-2-yne + methyl butyl ether (MBE) and hex-3-yne + dibutyl ether (DBE) binary mixtures and of the four pure components are measured by a static method in the temperature range from 263 to 354 K. The isoplethal T P data are reported and correlated with the Antoine equation. Interpolated data are also reported. Excess molar Gibbs energies, GE, are calculated for several constant temperatures, taking into account the vapour-phase imperfection in terms of the second virial coefficients, and were fitted to the Redlich Kister equation. Calorimetric excess enthalpy, HE, measurements for these binary mixtures are also reported at 298.15 K. The experimental VLE and HE data were used, examining the binary mixtures hex-2-yne +MBE and hex-3-yne + DBE in the framework of the DISQUAC and modified UNIFAC (Do) models.

Compounds

#	Formula	Name
1	C5H12O	butyl methyl ether
2	C8H18O	dibutyl ether
3	C6H10	3-hexyne
4	C6H10	2-hexyne

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	10
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	10
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	10
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Closed cell (Static) method	10
POMD	2 3	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	8
POMD	2 3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid		Liquid Gas	Closed cell (Static) method	72
POMD	1 4	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	6
POMD	1 4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid		Liquid Gas	Closed cell (Static) method	94

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isothermal vapour liquid equilibria and excess molar enthalpies of hex-2-yne + methyl butyl ether and hex-3-yne + dibutyl ether mixtures

Boukais-Belaribi, G.[Ghenima], Belaribi, B. F.[Brahim Farid], Lohmann, J.[Juergen], Jose, J.[Jacques]

ABSTRACT