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| 论文编号: |
122214O120110141 |
| 第一作者所在部门: |
603、606组 |
| 中文论文题目: |
Epoxidation of alkenes and their derivatives over Ti-YNU-1
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| 英文论文题目: |
Epoxidation of alkenes and their derivatives over Ti-YNU-1
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| 论文题目英文: |
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| 作者: |
樊卫斌
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| 论文出处: |
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| 刊物名称: |
Appl. Catal. A: General
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| 年: |
2011
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| 卷: |
401 |
| 期: |
1 |
| 页: |
37 |
| 联系作者: |
樊卫斌 |
| 收录类别: |
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| 影响因子: |
3.383
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| 摘要: |
The catalytic properties of Ti-YNU-1 for the epoxidation of various alkenes and their derivatives have been investigated in detail, and further were made a comparison with those of Ti-Beta. The much higher efficiency of Ti-YNU-1 than Ti-Beta was observed in catalyzing the epoxidation of alkenes and their electron-rich analogues. Although it was less active in the epoxidation of _,_-unsaturated ketones, it showed much higher stability. In contrast, Ti leaching from the framework sites occurred to Ti-Beta, and the leaching degree increased with the carbon number of ketones. It was also shown that the catalytic conditions, including the Ti content in samples, H2O2/substrate ratio, reaction temperature and time, acid washing and catalyst amount, significantly influenced the activity, selectivity and H2O2 efficiency. Co-oxidation of different alkenes led to the activity and epoxide selectivity being different from those obtained in the oxidation of single olefin as a result of the differences in adsorption properties of substrates over various titanosilicates, which affected the diffusion of substrate molecules and accounted for the unique shape-selectivity of Ti-YNU-1. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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关闭窗口 |
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