Abstract

This work investigates the phase equilibrium behavior of the constituents involved in the reaction medium of cyclohexane oxidation to produce cyclohexanol and cyclohexanone in compressed carbon dioxide. For this purpose, high-pressure cloud point data for binary, ternary, and quaternary CO2-containing systems with the reactant (cyclohexane) and the main products (cyclohexanol and cyclohexanone) were measured. The static synthetic method using a variable-volume view cell was employed for obtaining the experimental data in the temperature range of (293 to 343) K at several overall compositions and pressures up to 27 MPa. The experimental data were satisfactorily represented by the Peng−Robinson equation of state (PR-EoS) with the classical quadratic mixing rules.

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