| 摘要 |
PURPOSE:A specific amount of alkali is added to a mixture of phenols and catechols, and they are separately obtained from the aqueous phase and the organic phase, respectively, utilizing the change in the distribution ratio of these phenols and catechols to water and organic solvents. CONSTITUTION:In the separation of a mixture of phenols and catechols, a basic alkali metal compound such as sodium hydroxide is added to the mixture in an amount of over the total molar amount of the phenols and catechols, preferably 4-40 times the total weight of the catechols and phenols in the form of an aqueous solution and the mixture is treated with an organic solvent immiscible with water such as toluene. The mixture separates into the aqueous phase and the organic phase and the catechols are mainly obtained from the aqueous phase, while the phenols are mainly collected from the organic phase. The extraction operation is preferably carried out at 10-90 deg.C.
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