Abstract
Isobaric vapor - liquid equilibria were determined at 101.325 kPa for binary mixtures containing acetone + isopropyl ether, acetone + propyl ether and isopropyl ether + propyl ether using a dynamic still with vapor and liquid circulation. The azeotrope of the system acetone + isopropyl ether is in agreement with the literature value and none of the other systems shows an azeotrope. The thermodynamic consistency of the experimental data was checked by Van Ness's test and Herington's criterion modified by Wisniak and they satisfied our data. The activity coefficients were correlated using the Wilson model and the UNIFAC prediction. In the final part of the work, an experiment for extractive distillation is described on a laboratory scale and the results confirmed that there is no reversal of volatility of this system.
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