| Sn改性的Au/TS-1催化剂上丙烯气相环氧化反应研究 |
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| 引用本文： | 鲁继青.Sn改性的Au/TS-1催化剂上丙烯气相环氧化反应研究[J].分子催化,2010,24(6). |
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| 作者姓名： | 鲁继青 |
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| 作者单位： | 浙江师范大学物理化学研究所,浙江省固体表面反应化学重点实验室,浙江,金华,321004 |
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| 基金项目： | 国家自然科学基金项目(20703039) |
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| 摘 要： | 以Sn改性的TS-1分子筛为载体,利用沉积沉淀法制备了金催化剂,用于在氢气氧气共存下丙烯直接环氧化反应,并比较了不同Sn掺杂量对催化剂结构及其催化性能的影响.X射线衍射与红外光谱结果表明,Sn掺杂进入TS-1骨架中.反应活性结果表明,Sn的改性使催化剂上丙烯的转化率由1.6提高到2.5%,环氧丙烷的选择性由87上升到90%,活性的增加可能是由于Sn的掺入引起的配位效应(ligand effect).
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| 关 键 词： | 环氧丙烷 丙烯环氧化 金催化剂 TS-1分子筛 Sn 改性 |
| 收稿时间： | 2010/9/29 0:00:00 |
| 修稿时间： | 2010/10/18 0:00:00 |
The Direct Gas-Phase Epoxidation of Propylene on Sn-modified Au/TS-1 Catalysts |
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| PAN Xiao-rong,ZHANG Chao,LUO Meng-fei,LU Ji-qing.The Direct Gas-Phase Epoxidation of Propylene on Sn-modified Au/TS-1 Catalysts[J].Journal of Molecular Catalysis (China),2010,24(6). |
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| Authors: | PAN Xiao-rong ZHANG Chao LUO Meng-fei LU Ji-qing |
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| Institution: | PAN Xiao-rong,ZHANG Chao,LUO Meng-fei,LU Ji-qing(Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,Institute of Physical Chemistry,Zhejiang Normal University,Jinhua,321004,China) |
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| Abstract: | The direct propylene epoxidation in the presence of hydrogen and oxygen was studied over Au catalysts supported on a Sn-modified TS-1.The supported Au catalysts were prepared using the deposition-precipitation method.The effects of Sn contents on the structure and catalytic properties of catalysts were investigated.X-ray diffraction(XRD) and Fourier transform infrared(FTIR) spectroscopic results showed that the Sn was incorporated into the struture of the TS-1.The presence of Sn in the catalyst resulted in ... |
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| Keywords: | Propylene oxide Propylene epoxidation Au catalyst Stannum Modification |
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