Vapor-Liquid Equilibria for Binary Systems of Methanol, Ethyl Alcohol, 1-Propanol, and 2-Propanol with Ethyl Acetate and 1-Propanol-Water.

Abstract

T h e design and economic operation of fractionating equipment require knowledge of vapor-liquid equilibrium relations of the systems involved in the separation process. Equilibrium data a t two or more temperatures for binary systems composed of a common component and several in a series of homologous compounds allow calculation of thermodynamic properties and interpretation of behavior of the mixtures in relation to the chain length or structure of the homologs. Few experimental investigations of such a series of systems have been reported. Scatchard and his coworkers (25-29) calculated the thermodynamic properties of binary mixtures and, in some instances, t he extent of association and hydrogen bond strength from vapor-liquid equilibrium measurements. Mertes and Colburn (19) reported resul ts of isothermal vapor-liquid equilibrium measurements on some of the industrially important systems of hydrocarbons with furfural and made u s e of the variation of activity coefficients with temperature to calculate the heats of solution of the hydrocarbons in furfural. Thus, isothermal vapor-liquid equilibrium data can be utilized to calculate the.heats of mixing for those systems for which experimental data cannot b e taken conveniently in a laboratory. Binary systems of methanol, ethyl alcohol, 1-propanol, a d 2-propanol with ethyl acetate and 1-propanol with water were studied in t h i s investigation. Selection of t hese particular systems was based upon the availability of information on solution behavior from other s tudies (I).