NHPI和磺化酞菁钴催化的环己烷氧化反应

以N-羟基邻苯二甲酰亚胺(NHPI)和磺化酞菁钴(CoSPc)组成的催化体系对环己烷的氧化反应进行了研究,通过对反应时间、温度、NHPI用量、磺化酞菁钴用量的考察,得出环己烷氧化的最优反应条件为:反应时间2h,反应温度80℃,n(环己烷)∶n(NHPI)=10∶1,n(NHPI)∶n(CoSPc)=6∶1。在气相色谱上用内标法进行氧化反应产物的组成分析,产物除了环己酮和环己醇外,还发现了乙酸环己酯。在最优反应条件下,环己酮、环己醇、乙酸环己酯的产率及总产率为10.5%、1.1%、0.4%和12.0%。

Oxidation of Cyclohexane Catalyzed by NHPI and CoSPc

The oxidation of cyclohexane catalyzed by N-hydroxyphthalimide(NHPI) and cobalt sulphonated phthalocyanine(CoSPc) was investigated,in which GC was used to analyze the composition of oxidation products.According to the standard sample,in addition to the normal products,cyclohexanone and cyclohexanol,cyclohexanol acetate was also found and verified.The effect of reaction time,temperature,the amount of NHPI and/or CoSPc on the oxidation reaction was examined,and the optimal reaction conditions of cyclohexane oxidation were as follows: reaction time 2 h,reaction temperature 80 ℃,n(cyclohexane)∶ n(NHPI)=10∶ 1,n(NHPI)∶ n(CoSPc)=6∶ 1.Under the optimal conditions,10.5% yield of cyclohexanone,1.1% of cyclohexanol and 0.4% of cyclohexanol acetate were obtained,and the total yield reached 12.0%.