Print: | ISSN 0304-128X |
Online: | ISSN 2233-9558 |
HWAHAK KONGHAK,
Vol.10, No.6, 281-288, 1972 Methyl ethyl Ketone-Alcohol계의 기액평형에 있어서 비휘발도와 액조성과의 관계
Correlation between Relative Volatility and Liquid Composition in Vapor-Liquid Equilibrium of Methyl ethyl Ketone-Alcohol System
Vapor-liquid equilibrium data for the binary systems of methanol-methyl ethyl ketone, ethanol-methyl ethyl ketone, methyl ethyl ketone-n-propanol and methyl ethyl ketone-n-butanol were investigated.
In these systems, vapor-liquid equilibrium data for methyl ethyl ketone-n-propanol and methyl ethyl ketone-n-butanol system were measured under atmospheric pressure. In order to confirm the accuracy of experimental results, the x-y data obtained are thermodynamically analyzed with the Herington's consistency test, and checked with the relations of activity coefficients and Q-functions to the liquid phase compositions. It was shown that the logarithmic value of relative volatility (log α) exhibited a linear function of the liquid composition (x) for systems. And these linear relationships for each of four systems indicate a strong tendency falling into a single point, when each line is extended. The present study proposed the empirical equations by which x-y data for each binary system of methyl ethyl ketone-alcohols can be estimated. And the x-y data estimated by the proposed equations are compared with the experimental data, and proved to be in a good coincidence with them. |