Abstract
The vapor–liquid equilibrium (VLE) data for binary systems 2-PE and 2-EP were measured at 50.0, 20.0, and 10.5 kPa using a modified Rose equilibrium still. The Redlich–Kister area test and Fredenslund point test were applied to test the thermodynamic consistency of the VLE data, respectively. In addition, experimental data were successfully matched using nonrandom two-liquid (NRTL), Wilson, and Universal Quasi-Chemical (UNIQUAC) activity coefficient models. Binary interaction parameters (BIPs) corresponding to three models were obtained by maximum likelihood target function regression. This paper would help the distillation design of 2-phenylethanol and 2-ethylphenol in industrial applications.
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