Ternary vapour-liquid equilibria system: Acetoneethyl methyl ketone-cyclohexane

✍ Scribed by Rao, K. V. Kurmanadha ;Krishnamurty, V. V. G. ;Rao, C. Venkata

• Publisher: Wiley (John Wiley & Sons)
• Year: 2007
• Weight: 643 KB
• Volume: 7
• Category: Article
• ISSN: 0021-8871
• DOI: 10.1002/jctb.5010071003

✦ Synopsis

Abstract

Experimental T‐x‐y data of the system: acetone‐ethyl methyl ketone‐__cyclo__hexane at 760 mm. Hg pressure are reported. The data were obtained using a modified Colburn type of equilibrium still. No ternary azeotrope was observed.

The experimental data were found to be thermodynamically consistent according to the method of Krishnamurty & Venkata Rao which is based on the Gibbs‐Duhem equation.

The activity coefficient data of the present system have been satisfactorily correlated with the modified Margules equations developed earlier, using a ternary constant C^t^ = 0·5. In the case of the present system, the modified Margules equations with C^t^ = 0·5 are equivalent to the three‐suffix ternary Margules equations of Wohl, with C = 0·305. The ternary smoothed experimental T‐x‐y data are compared with the data calculated using the modified Margules equations with C^t^ = 0·5 and there is close agreement between the calculated and experimental data.

It is suggested that the thermodynamic consistency test proposed by Krishnamurty & Venkata Rao and the modified Margules equations may be used together for mathematical analysis of the ternary vapour‐liquid equilibrium data since the same smoothed experimental log γi/γj values can be used for both the methods.