| 摘要 |
Disclosed is a process for the preparation of phenols which comprises the steps of (I) decomposing a hydroperoxide of an isopropyl aromatic compound with an acid catalyst, (II) separating the decomposition product obtained in step (I) into acetone, phenols, hydrocarbons and distillation residue by distillation of the decomposition product and (III) thermally decomposing the distillation residue and recycling the resulting crude phenol to step (II), wherein the crude phenol obtained in step (III) is contacted with a glycol to form a hydrocarbon layer and an extract layer comprising the glycol and phenol, and the phenol in said extract layer is recycled to step (II). According to this process, mingling of impurity components having a boiling point close to that of the desired phenol, which are contained in the thermal decomposition product of the distillation residue, into the product phenol can be effectively prevented, and the desired phenol can be obtained at a high purity and at a high recovery yield. |
