In a process for separating a mixture comprising cyclohexanone and phenol, at least a portion of the mixture is distilled in the presence of a solvent including at least two alcoholic hydroxyl groups attached to non-adjacent saturated carbon atoms, water, and in the presence or absence of a hemiketal defined by the formula (I) or the formula (II): wherein R1, the same or different at each occurrence, is independently an alkylene group having from 2 to 10 carbon atoms, R2 is an alkylene group having from 4 to 10 carbon atoms and/or R3 is hydrogen or the following group: and in the presence or absence of an enol-ether derived from the hemiketal defined by the formula (I) or the formula (II), wherein the total concentration of the hemiketal and enol-ether, expressed in term of weight percentage of the total weight of the feed to the distilling step, is at most 0.01%.
在分离包含
环己酮和
酚的混合物的过程中,至少部分混合物在存在溶剂的情况下蒸馏,该溶剂包括连接到非相邻饱和碳原子上的至少两个醇羟基的
水,以及存在或不存在由公式(I)或公式(II)定义的半
缩酮:其中R1在每次出现时相同或不同地独立地是具有2至10个碳原子的烷基基团,R2是具有4至10个碳原子的烷基基团和/或R3是氢或以下基团:在存在或不存在由公式(I)或公式(II)定义的半
缩酮衍生的烯醇醚的情况下,在蒸馏步骤的进料的总重量百分比方面,半
缩酮和烯醇醚的总浓度最多为0.01%。