| In this paper, two kinds of supported catalysts were synthesized for the oxidation of cyclohexane.Tetraphenylporphyrin iron porphyrin was encapsulated in the copolymer of styrene and divinylbenzene. The influence of different styrene/divinylbenzene molar ratios, stirring rate on catalyst preparation and immobilization time under UV lamb was investigated, which indicated that the best particle morphology was obtained by molar ratios of styrene/divinylbenzene = 1:1, stirring rate at 800 r/min and 3 days under UV lamb. The catalytic properties in the oxidation of cyclohexane were tested using iodosylbenzene as oxygen donor, with molar ratios of catalyst, idosylbenzene, and cyclohexane of 1:10:1000, and the oxidation products were analyzed by gas chromatography, which showed that encapsulated catalyst had higher catalytic activity than ironporphyrin without encapsulation, especially the ones with particle size of 30~50μm, with 73.5% yield of cyclohexanol, while catalyst without encapsulation only had a catalytic activity of 37.2%. After reuse (5times), the catalyst was still stable. The yield of cyclohexanol was 63.1%.Tetrachlorosulfonyl iron porphyrin was synthesized and supported on chitison in solvent of DMF, which efficiently catalysed oxidation of cyclohexane, with molar ratios of catalyst, idosylbenzene, and cyclohexane of 1:10:1000. The catalyst gave rise to cyclohexanol yield of 51.9% after 6 h of reaction. The recycle of supported catalyst was easy with cyclohexanol yield of 44.7% after 5 times.Through comparison of two catalysts in the oxidation of cyclohexane, it showed that encapsulated catalyst had a higher catalytic properties. One possible explanation is that some amino groups on chitosan reacted with chlorosulfonyl groups, thus leading to the destructioin of reactive cite of porphyrin. The hydroxylation occurs according to the so-called oxygen rebound mechanism, as expected for a P-450 model system.
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