ABSTRACT

(Liquid-liquid) equilibrium (LLE) data for the ternary system of water + 2,3-butanediol + isobutanol have been determined at 298.2, 308.2 and 318.2 K and atmospheric pressure. Solubility curves were obtained by the cloud point method, while compositions of tie-lines were obtained by gas chromatography. Distribution coefficients and separation factors have been evaluated for the immiscibility region. The reliability of the experimental tie-lines has been confirmed by using Othmer-Tobias correlation. The LLE data of the ternary systems have been correlated by both the NRTL model and UNIQUAC model. Root mean square deviations between experimental and calculated compositions were considered satisfactory.

Compounds

#	Formula	Name
1	C4H10O2	2,3-butanediol
2	C4H10O	2-methyl-1-propanol
3	H2O	water

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	2 1 3	Mass fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mass fraction - 3; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	75
POMD	2 1 3	Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 3 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mass fraction - 3; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	20

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibria of water + 2,3-butanediol + isobutanol at several temperatures

Wu, Y.-Y.[Yan-Yang], Pan, D.-T.[De-Tao], Zhu, J.-W.[Jia-Wen], Chen, K.[Kui], Wu, B.[Bin], Ji, L.[Lijun]

ABSTRACT