ABSTRACT

Isobaric vapor-liquid-liquid equilibrium (VLLE) data for the ternary system cyclohexane + water + acetic acid were measured at 101.3 kPa. A modified dynamic recirculating still equipped with a mixing section was used to determine the VLLE. The experimental data indicate that a binary heterogeneous azeotrope is present at 342.16 K with a composition of 0.3 and 0.7 mole fractions of water and cyclohexane, respectively. The VLLE data have been used to test the reliability of the UNIQUAC and NRTL models in the prediction of VLLE. The two model parameters were obtained using VLE and LLE data correlation, respectively. The results indicate that the NRTL model has an acceptable prediction of the VLLE data, and the UNIQUAC model has a prediction of the heterogeneous region.

Compounds

#	Formula	Name
1	C6H12	cyclohexane
2	C2H4O2	acetic acid
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	Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 1 Mole fraction - 3 ; Gas Mole fraction - 1 ; Gas	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Gas Liquid mixture 1	Chromatography Chromatography Chromatography Chromatography Chromatography Chromatography	14

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isobaric vapor-liquid-liquid equilibrium for water + cyclohexane + acetic acid at 101.3 kPa

Liu, L.[Liyan], Cheng, C.[Chao], Mu, X.[Xiaolong], Li, H.[Hong], Tan, W.[Wei]

ABSTRACT