Vapor-liquid equilibrium data ethanol/butanol

The Non-Random, Two Liquid Equation was used in an attempt to develop a method for predicting isobaric vapor-liquid equilibrium data for multicomponent systems of water and simple alcohols—i.e., ethanol, 1-propanol, 2-methyl-l-propanol (2-butanol), and 3-methyl-l-butanol (isoamyl alcohol). Methods were developed to obtain binary equilibrium data indirectly from boiling point measurements. The binary data were used in the Non-Random, Two Liquid Equation to predict vapor-liquid equilibrium data for the ternary mixtures, water-ethanol-l-propanol, water-ethanol-2-methyl-1-propanol, and water-ethanol-3-methyl-l-butanol. Equilibrium data for these systems are reported. 

Ternary System. The values of all binary parameters used in predicting the ternary data are shown in Table IV. The predicted values of the vapor-liquid equilibrium data—i.e.9 the boiling point, and the composition of the vapor phase, y, for given values of the liquid composition, x, are presented in Tables V, VI, and VII. Also shown are the measured boiling points for the given values of the liquid composition. The RMSD value between the predicted and measured boiling points for the systems water-ethanol-l-propanol, water-ethanol-2-methyl-l-propanol, and water-ethanol-2-methyl-l-butanol are 0.23°C, 0.69°C, and 2.14°C. It seems therefore that since the NRTL equation successfully predicts temperature, the predicted values of y can be accepted confidently. 

Table VII. Vapor—Liquid Equilibrium Data at 760 mm Hg Water (1)—Ethanol (2)-3-Methyl-1-Butanol (3)...

Zaytseva, A. Uusi-Kyyny, P. Pokki, J.-P. Pakkanen, M. Aittamaa, J. Vapor-liquid equilibrium for the trans-2-butene + methanol, -t ethanol, + 2-propanol, + 2-butanol and -t 2-methyl-2-propanol systems at 332 K J. Chem. Eng. Data 2004,49, 1168-1174... 

Hull, A. Kronberg, B. Van Stamm, J. Golubkov, I. Kristensson, J. Vapor-liquid equilibrium of binary mixtures. 2. Ethanol + 2,2,4-trimethylpentane, 1-butanol + 2,2,4-trimethylpentane, and eflianol + o-xylene. J. Chem. Eng. Data 2006, 51, 2002-2008. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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