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Vapor Liquid Equilibria for the Systems Water-Methanol, Water-ethanol, Methanol-Ethanol, and Water-Methanol-Ethanol at 298.15 K Determined by a Rapid Transpiration Method.

N7927290

Publication Date	1979
Personal Author	Hall, D. J.; Mash, C. J.; Pemberton, R. C.
Page Count	34
Abstract	Isothermal vapor-liquid equilibria were determined by means of a rapid transpiration technique at 298.15 K for the ternary mixture water-methanol-ethanol and for the binary mixtures water-methanol, water-ethanol, and methanol ethanol. Values of the molar excess Gibbs energy and the partial molar Gibbs energies were computed and the results tested for thermodynamic consistency. The binary mixture data were correlated by the Wilson, Redlich-Kister, NRTL and UNIQUAC equations and the ternary systems data predicted from the binary data. The Redlich Kister equation with added ternary terms was fitted to the binary and ternary data. The predicted values compare well with the experimental results.
Keywords	Binary mixtures Liquid-vapor equilibrium Thermodynamic properties Transpiration Curve fitting Gibbs-helmholtz equations Laboratory equipment Methyl alcohols Ethanol Methanol
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	99F - Physical & Theoretical Chemistry
Corporate Authors	National Physical Lab., Teddington (England). Div. of Chemical Standards.
Document Type	Technical Report
NTIS Issue Number	197922

Vapor Liquid Equilibria for the Systems Water-Methanol, Water-ethanol, Methanol-Ethanol, and Water-Methanol-Ethanol at 298.15 K Determined by a Rapid Transpiration Method.

Vapor Liquid Equilibria for the Systems Water-Methanol, Water-ethanol, Methanol-Ethanol, and Water-Methanol-Ethanol at 298.15 K Determined by a Rapid Transpiration Method.
N7927290

Publication Date	1979
Personal Author	Hall, D. J.; Mash, C. J.; Pemberton, R. C.
Page Count	34
Abstract	Isothermal vapor-liquid equilibria were determined by means of a rapid transpiration technique at 298.15 K for the ternary mixture water-methanol-ethanol and for the binary mixtures water-methanol, water-ethanol, and methanol ethanol. Values of the molar excess Gibbs energy and the partial molar Gibbs energies were computed and the results tested for thermodynamic consistency. The binary mixture data were correlated by the Wilson, Redlich-Kister, NRTL and UNIQUAC equations and the ternary systems data predicted from the binary data. The Redlich Kister equation with added ternary terms was fitted to the binary and ternary data. The predicted values compare well with the experimental results.
Keywords	Binary mixtures Liquid-vapor equilibrium Thermodynamic properties Transpiration Curve fitting Gibbs-helmholtz equations Laboratory equipment Methyl alcohols Ethanol Methanol
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	99F - Physical & Theoretical Chemistry
Corporate Authors	National Physical Lab., Teddington (England). Div. of Chemical Standards.
Document Type	Technical Report
NTIS Issue Number	197922