| Highly Effective Propylene Epoxidation over TS-1／SiO2 Hydrothermally Treated |
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| 引用本文： | WeiGuoCHENG XiangShengWANG GangLI XinWenGUO QingSongLIN. Highly Effective Propylene Epoxidation over TS-1／SiO2 Hydrothermally Treated[J]. 中国化学快报, 2005, 16(1): 103-106 |
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| 作者姓名： | WeiGuoCHENG XiangShengWANG GangLI XinWenGUO QingSongLIN |
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| 作者单位： | DepartmentofCatalysisChemistryandEngineeringandStateKeyLab.ofFineChem.,DalianUniv.ofTechnol.,Dalian116012 |
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| 摘 要： | The propylene epoxidation over TS-1/SiO2 catalyst hydrothermally treated was investigated. It was found by EPR characterization that two types of Ti (IV)-superoxide radicals,A (gz=2.0271; gy=2.0074; gx=2.0010) and B (gz=2.0247; gy= 2.0074; gx= 2.0010), were observed for TS-1/SiO2. The superoxo species A converted to B after TS-1/SiO2 catalyst was hydrothermally treated. The results show that over TS-1/SiO2 catalyst hydrothermally treated at 170℃, about 95% conversion of H2O2 with above 94% PO selectivity is obtained during continuous running for 300 h under the conditions of reaction temperature 45℃, 0.5 h^-1 WHSV of propylene.
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| 关 键 词： | 丙烯 环氧化作用 TS-1／SiO2 催化剂 热水处理 电子顺磁共振 表征 |
Highly Effective Propylene Epoxidation over TS-1/SiO2 Hydrothermally Treated |
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| Wei Guo CHENG?,Xiang Sheng WANG,Gang LI,Xin Wen GUO,Qing Song LIN. Highly Effective Propylene Epoxidation over TS-1/SiO2 Hydrothermally Treated[J]. Chinese Chemical Letters, 2005, 16(1): 103-106 |
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| Authors: | Wei Guo CHENG? Xiang Sheng WANG Gang LI Xin Wen GUO Qing Song LIN |
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| Affiliation: | Wei Guo CHENG?,Xiang Sheng WANG,Gang LI,Xin Wen GUO,Qing Song LIN Department of Catalysis Chemistry and Engineering and State Key Lab. of Fine Chem.,Dalian Univ. of Technol.,Dalian 116012 |
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| Abstract: | |
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| Keywords: | Hydrothermal TS-1/SiO2 propylene epoxidation EPR radical. |
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