MCM-41分子筛负载磷钨酸催化H_2O_2氧化环已酮/环已醇合成己二酸

MCM-41 Zeolite Supported Phosphotungstic Acid-Catalyzed Oxidation of HydrogenPeroxide Cyclohexanone/Cyclohexanol Synthesis of Adipic Acid

在无溶剂、无相转移催化剂条件下,用磷钨酸做为催化剂。先用MCM-41分子筛作为催化剂载体,30%H2O2作氧源,在一定条件下可以将环已醇/环己酮混合物氧化成己二酸。讨论了30%H2O2的量、反应时间、反应温度、催化剂用量、草酸对己二酸产量的影响,以及催化剂回收重复利用。结果表明:用MCM-41分子筛负载80%的磷钨酸作催化剂反应7h,己二酸的最大产率高达89.17%。具有很好的应用价值。

In the absence of solvent,phase transfer catalyst without conditions, with phosphotungstic acid as a catalyst,using MCM-41 zeolite as a catalyst carrier,30% hydrogen peroxide as the source of oxygen.under certain temperature can be cyclohexanol / cyclohexanone mixture into adipic acid oxidation.The 30% hydrogen peroxide amount,the reaction time,temperature,amount of catalyst,acid on the production of adipic acid,catalyst recovery and reuse were discussed.The results showed： when MCM-41 zeolite load of 80% phosphotungstic acid catalyst for 7h,Adipic Acid maximum production rate is as high as 89.17%.