Solubility Measurement and Data Correlation of Cyclohexanone, tert-Butanol, and 1,4-Dioxane in p-, o-, and m-Xylenes and Ethylbenzene

The solubility of cyclohexanone, tert-butanol, and 1,4-dioxane in p-, o-, and m-xylenes and ethylbenzene was measured by a gas chromatography method under an atmospheric environment. The measured data indicated that the solubility of cyclohexanone, tert-butanol, and 1,4-dioxane in the xylenes and ethylbenzene increases with increasing temperature. The experimentally determined solubility results were fitted with the modified Apelblat equation, Van’t Hoff equation, and Wilson model. Among them, the Wilson model was most consistent with the measured solubility results. The dissolution-related thermodynamic properties of cyclohexanone, tert-butanol, and 1,4-dioxane in xylenes and ethylbenzene, including the changes of molar Gibbs free energy, molar enthalpy, and molar entropy, were predicted and analyzed via the correlated Wilson model, which indicates that the dissolution behaviors are spontaneous and endothermic process. The obtained solubility results provide the thermodynamic foundation for the development and upgrading of industrial separation processes related to xylene, ethylbenzene, cyclohexanone, tert-butanol, and 1,4-dioxane.