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    • 9. 发明授权
    • Process for preparation of phenols
    • 苯酚的制备方法
    • US4271322A
    • 1981-06-02
    • US109214
    • 1980-01-03
    • Fujihisa MatsunagaHirohiko Nambu
    • Fujihisa MatsunagaHirohiko Nambu
    • C07C27/00C07C1/00C07C4/18C07C7/10C07C15/44C07C27/28C07C29/132C07C37/68C07C37/72C07C39/00C07C67/00C07C37/08C07C37/74
    • C07C7/10C07C37/685C07C37/72Y02P20/52
    • 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.
    • 公开了一种制备苯酚的方法,其包括以下步骤:(I)用酸催化剂分解异丙基芳族化合物的氢过氧化物,(II)将步骤(I)中获得的分解产物分离成丙酮,酚,烃和 通过蒸馏分解产物和(III)热分解蒸馏残余物并将所得粗苯酚再循环至步骤(II),其中将步骤(III)中获得的粗苯酚与二醇接触以形成烃层和 将包含二醇和苯酚的提取物层和所述提取物层中的苯酚再循环至步骤(II)。 根据该方法,可以有效地防止蒸馏残渣的热分解产物中所含的沸点接近所需苯酚的杂质成分与产物苯酚混合,得到所需的苯酚 纯度高,回收率高。