环己酮Baeyer-Villiger氧化合成ε-己内酯

Synthesis of ε-Caprolactone by Baeyer-Villiger Oxidation of Cyclohexanone

通过共沉淀法制备了一系列金属氧化物及复合金属氧化物催化剂,并研究了其对双氧水体系中环己酮Baeyer-Villiger氧化合成ε-己内酯的催化性能。结果表明,在乙腈作为溶剂的体系中,MgO催化剂对环己酮Baeyer-Vil-liger氧化合成ε-己内酯具有最高的催化活性;在n(H2O2)∶n(MgO)∶n(环己酮)为9.6∶0.57∶1、70℃下反应6h,环己酮转化率达82.5%、ε-己内酯选择性达98.7%。

A series of metal oxide catalysts and composite metal oxide catalysts were prepared by a coprecip- itation method, and their catalytic performances were investigated for Baeyer-Villiger oxidation of cyelohex- anone in the hydrogen peroxide system. The results showed that MgO had the highest catalytic activity. When acetonitrile as solvent,n（H2O2）∶n（MgO）∶n（eyclohexanone） was 9.6∶0.57∶1,reaction temperature was 70℃,reaction time was 6 h,the conversion of cyclohexanone and the selectivity of e-caprolactone reached 82.5 and 98.7 %, respectively.