Vapor−Liquid Equilibrium Measurements and Modeling for Cyclohexane + Cyclohexanone

The characteristically low conversion in the oxidation of cyclohexane to form cyclohexanol and cyclohexanone requires significant recovery work via distillation. In this study, new isothermal vapor−liquid equilibria (VLE) are presented for the cyclohexane + cyclohexanone binary system. Measurements...

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Bibliographic Details
Published in:Journal of chemical and engineering data 2010-10, Vol.55 (10), p.4521-4524
Main Authors: Coquelet, Christophe, Soo, Chien-Bin, Valtz, Alain, Richon, Dominique, Amoros, Daniel, Gayet, Hubert
Format: Article
Language:English
Subjects:
Chemical and Process Engineering
Engineering Sciences
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Summary:The characteristically low conversion in the oxidation of cyclohexane to form cyclohexanol and cyclohexanone requires significant recovery work via distillation. In this study, new isothermal vapor−liquid equilibria (VLE) are presented for the cyclohexane + cyclohexanone binary system. Measurements were performed at temperatures of (423, 444, 464, and 484) K, using an apparatus based on the “static−analytic” method, with two ROLSI pneumatic capillary samplers. The generated data are correlated using two equations of state, namely, the Peng−Robinson coupled with the Wong−Sandler mixing rules and the perturbed-chain statistical associating fluid theory (SAFT) with a dipolar contribution by Jog and Chapman. While both models perform reasonably well in describing the phase equilibria, the Peng−Robinson is slightly better than the perturbed-chain SAFT equation of state and tends to be more easily implemented in industrial process simulators.
ISSN:0021-9568
1520-5134
DOI:10.1021/je100474b