Hydroxylation of alkanes catalyzed by manganese tetraphenylporphyrin immobilized on imidazole-modified silica gel
作者： Takashi Tatsumi , Makoto Nakamura , Hiro-o Tominaga
DOI: 10.1016/0920-5861(89)85019-9
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摘要: Abstract Manganese tetraphenylphorphyrin complex fixed on imidazole-modified silica exhibits fair catalytic activity for cyclohexane oxidation by hydrogen peroxide. Immobilization of the porphyrin could result in prevention formation μ-oxo dimers, increasing capability. Turnover numbers are greatly improved decreasing metal loadings, suggesting importance site isolation complexes. Rather high loading imidazolyl group is required since its ligation to Mn was fully effected when large excess present, as shown change diffuse reflectance spectra with imidazolyl/Mn ratio.
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