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首页> 外文会议>International Conference on Chemical, Material and Metallurgical Engineering >Epoxidation of Styrene with Molecular Oxygen on Co_3O_4/SiO_2 Catalyst
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Epoxidation of Styrene with Molecular Oxygen on Co_3O_4/SiO_2 Catalyst

机译：CO_3O_4 / SiO_2催化剂中分子氧的苯乙烯环氧化

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A series of supported catalysts Co_3O_4/SiO_2 were prepared by deposition precipitation method. ICP-AES, XRD and TEM data revealed that the Co_3O_4 active site was highly dispersed on the surface of SiO_2. The catalysts were evaluated for selective epoxidation of styrene with molecular oxygen. The results showed that the catalysts were of good catalytic activity for styrene epoxidation and many factors had an evident effect on the catalytic epoxidation activity. The best catalyst was 3% Co_3O_4/SiO_2 on which 96.3% conversion of styrene and 52.7% selectivity of styrene oxide were obtained under the flow rate of O_2 20mL/min, 100°C, 10h with solvent.
机译：通过沉淀沉淀法制备了一系列负载型催化剂CO_3O_4 / SiO_2。 ICP-AES，XRD和TEM数据显示CO_3O_4有效位点高度分散在SIO_2的表面上。评价催化剂以选择性环氧化苯乙烯与分子氧。结果表明，催化剂是苯乙烯环氧化的良好催化活性，并且许多因素对催化环氧化活性具有明显的影响。最佳催化剂是3％CO_3O_4 / SiO_2，其中苯乙烯的转化率为96.3％，在溶剂的流速下获得苯乙烯的52.7％的苯乙烯选择性选择性，得到溶剂的10℃，10h。

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