公开(公告)号：US3907901A

公开(公告)日：1975-09-23

申请号：US34843073

申请日：1973-04-05

Applicant: ALLIED CHEM

Inventor： FEDER RAYMOND L ,  FUHRMANN ROBERT ,  PISANCHYN JOHN ,  ELISHEWITZ SAUL ,  INSINGER THOMAS H ,  MATHEW CHEMPOLIL THOMAS

IPC: C07C409/10 ,  C07C73/08

CPC classification number: C07C409/10 ,  C07C407/00 ,  C07C407/003 ,  C07C409/14

Abstract: An improved continuous process for preparing cumene hydroperoxide and phenol by the controlled liquid phase air oxidation of cumene in the absence of initiators, catalysts, additives or alkalizing agents. A mixture containing cumene having a purity of at least 99.8 percent, and recycle cumene hydroperoxide which has been purified by washing with aqueous alkali metal hydroxide, followed by water wash, is oxidized in a single or multiple stage system by continuously passing through the mixture a stream of gas containing at least 8 mol percent of oxygen at a rate wherein the ratio of the mols of oxygen supplied per hour to the maximum amount of oxygen consumable per hour exdeeds 0.25 and the exit gas contains from 3-10 percent oxygen; and when oxidation is effected in a mutiple stage system the temperature is maintained stepwise from about 120* to about 80*C. while the concentration of cumene hydroperoxide in the reaction mixture is permitted to increase stepwise from about 8 percent to about 40 percent.

Abstract translation: 在不存在引发剂，催化剂，添加剂或碱化剂的情况下，通过异丙苯的受控液相空气氧化来制备氢过氧化异丙苯和苯酚的改进的连续方法。 含有纯度至少为99.8％的异丙基苯的混合物，以及通过用碱金属氢氧化物水溶液洗涤纯化，然后水洗后再循环的异丙基氢过氧化物，在单级或多级系统中通过连续通过混合物a 含有至少8mol％氧气的气体流，其中每小时供应的氧气摩尔数与每小时最大氧消耗量的比例超过0.25，出口气体含有3-10％的氧气; 并且当在多级系统中进行氧化时，温度从约120℃至约80℃逐步维持，而反应混合物中氢过氧化异丙苯的浓度允许从约8％至约40％逐步增加。