公开(公告)号：US4162268A

公开(公告)日：1979-07-24

申请号：US840073

申请日：1977-10-06

申请人： Tetsuya Miyake ,  Kohji Noguchi ,  Kohichi Fujimoto

发明人： Tetsuya Miyake ,  Kohji Noguchi ,  Kohichi Fujimoto

IPC分类号： C07C49/76 ,  B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/36 ,  C07C67/00 ,  C07C45/04

CPC分类号： C07C45/36

摘要： A process for preparing diacetylbenzene by a liquid phase oxidation reaction which comprises contacting a heterogeneous mixture of (A) about 98 to about 25 percent by volume of an organic liquid phase containing at least one compound selected from the group consisting of diethylbenzene and ethylacetophenone and (B) about 2 to about 75 percent by volume of an aqueous liquid phase containing, as a catalyst, at least about 0.01 mol/l of at least one water-soluble salt of a metal selected from the group consisting of manganese, cobalt, nickel, chromium, copper and iron and having a pH of about 1 to about 6 with a molecular oxygen-containing gas at a temperature of from about 100.degree. C. to about 180.degree. C. under a pressure of about 1 to about 50 Kg/cm.sup.2 to effect the liquid phase oxidation reaction, separating the resulting reaction mixture liquid into the aqueous liquid phase and the organic liquid phase and recovering diacetylbenzene from the separated organic liquid phase by distillation.

摘要翻译： 一种通过液相氧化反应制备二乙酰苯的方法，其包括使（A）约98至约25体积％的含有至少一种选自二乙基苯和乙基苯乙酮的化合物的有机液相的非均相混合物和（ B）约2至约75体积％的含水液相，其含有至少约0.01mol / l的至少一种选自锰，钴，镍的金属的水溶性盐作为催化剂 ，铬，铜和铁，并且在约1至约50Kg / cm 3的压力下，在约100℃至约180℃的温度下，使用含分子氧的气体，其pH约为1至约6， cm2进行液相氧化反应，将得到的反应混合液分离成含水液相和有机液相，并通过蒸馏从分离的有机液相中回收二乙酰苯。