Process for the preparation of cyclohexanol
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsYoshikazu Takamatsu, Tokitaka Kaneshima
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Abstract
A method for producing cyclohexanol by subjecting cyclohexene to a hydration reaction in the presence of water using a solid acid as a catalyst in which as a reaction solvent, there is used an organic solvent having a solubility in water at 25° C. of not higher than 5% by weight, a boiling point which is at least 20° C. higher than that of the cyclohexanol produced, a conversion rate of not more than 3% under the hydration reaction conditions, and a solvent effect index of not less than 1.5 which indicates the effect of making the distribution of cyclohexene into the aqueous phase predominate.
Claims5
A method for producing cyclohexanol by subjecting cyclohexene to a hydration reaction in the presence of water using a solid acid as a catalyst, said method using, as a reaction solvent, an organic solvent which has a solubility in water at 25° C. of not higher than 5% by weight, a boiling point which is at least 20° C. higher than that of the cyclohexanol produced, a conversion rate of not more than 3% under the hydration reaction conditions, and a solvent effect index of not less than 1.5, said solvent effect index indicating the effect of making the distribution of cyclohexene into the aqueous phase predominate.
Dependencies are inferred from the claim text.