ABSTRACT

Ternary excess molar enthalpies for the {x1CH3OH+ x2i-C3H7OH+ (1 ? x1 ? x2)c-C4H8O2} and {x1C2H5OH+ x2i- C3H7OH+ (1 ? x1 ? x2)c-C4H8O2} mixtures have been measured by a flow microcalorimeter at T ? 298:15 K and ambient pressure. The experimental results are correlated with a polynomial equation and used to construct constant excess enthalpy contours. Furthermore, the results have been compared with those calculated from a UNIQUAC associated-solution model. This model considers the self-association of like alcohols, multicross-association of unlike alcohols, and solvation between alcohols and 1,4-dioxane. The model with the association constants, solvation constants, and binary information alone predict the ternary excess molar enthalpies satisfactorily.

Compounds

#	Formula	Name
1	CH4O	methanol
2	C3H8O	propan-2-ol
3	C4H8O2	1,4-dioxane
4	C2H6O	ethanol

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 2 3	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	57
POMD	4 2 3	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 4; Liquid Mole fraction - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Flow calorimetry	57

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Excess molar enthalpies of ternary mixtures of (methanol, ethanol + 2-propanol + 1,4-dioxane) at T ? 298:15 K

Bhuiyan, M.M.H.[Mohammad M.H.], Tamura, K.[Kazuhiro]

ABSTRACT