摘要
以MnTPPC1为催化剂研究了不同氧原子供体PhIO、NaOCl和H2O2在环己烷加氧反应中的作用。根据动力学考察和UV-V1S、IR、ESR分析认为,PhIO和NaOC1可能分别与MnTPPC1形成具有转移氧原子能力的单核或双核的高氧化态氧代锰卟啉配合物,而H2O2与MnTPPC1作用则形成非活性物种。讨论了MnTPPC1-单氧原子供体催化环己烷加氧反应机理。
The action of different single oxygen atom donors,such as PhIO,NaOC1,H2O2,during the oxidation of cyclohexane catalyzed by MnTPPC1 were investigated.Based on the kinetic examination and analytic results of UV-Vis,IR,ESR of the intermediates formed by MnThPC1 reacted with different oxidants,it was considered that the high-valent.complexes of mononuclear or dinuclear oxo-Mn porphyrin could be formed when MnTPPC1 reacts with PhIO or NaOC1 respectively,and that these complexes as active species were able to transfer one oxygen atom to the substrate.However an inactive species may be formed when MnTPPC1 reacts with H2O2.The mechanism of oxidation of cyclohexane catalyzed by MnTPPC1 was discussed.
出处
《分子催化》
CSCD
1996年第2期120-126,共7页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金
关键词
锰卟啉
加氧
环己烷
细胞色素
加氧酶
催化剂
Manganese porphyrin complex
Cyclohexane
Oxidation
Single oxygen atom donor