Vapor-liquid equilibria of the binary systems (cyclohexanone + 2-heptanone) and (cyclohexanone + hexanal) at different temperatures

Abstract

Isothermal VLEdata for(cyclohexanone+2-heptanone)and(cyclohexanone+hexanal)mixturesarereported at T =(313.15,333.15,353.15,393.15)K,which weremeasuredusingastatictechnique.Equilibrium properties are measured directly, and their expanded uncertainties (k = 2) are: injected volume 0.06 mL, temperature 20 mK,andtotal pressure0.1%. The non-idealityof thevapor phasewastakeninto accountusingthevirialequation of state. VLE data were correlated using Margules, Wilson, NRTL and UNIQUAC equations obtaining goodresults. Thebinarymixture(cyclohexanone+2 heptanone)presentsamaximumpressureazeotropewhichisbrokenat 393.15 K.