Gas-phase propene epoxidation over Ag/TS-1 prepared by plasma sputtering
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Wang, Jinxue
- 通讯作者：
- Guo, XW (reprint author), Dalian Univ Technol, Dept Catalysis Chem & Engn, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
- 合写作者：
- Liu, Min,Guo, Xinwen,Wu, Hongyu,Xu, Jun,Lu, Wenqi
- 发表时间：
- 2011-04-01
- 发表刊物：
- REACTION KINETICS MECHANISMS AND CATALYSIS
- 收录刊物：
- SCIE、EI
- 文献类型：
- J
- 卷号：
- 102
- 期号：
- 2
- 页面范围：
- 447-457
- ISSN号：
- 1878-5190
- 关键字：
- Propene oxide; Epoxidation; Silver; TS-1; Plasma
- 摘要：
- Supported Ag/TS-1 catalysts were prepared by the cool plasma sputtering technique and characterized by BET, SEM/EDX, XRD, UV-Vis and TEM techniques. The Ag loading and particle size on TS-1 were tailored by sputtering time. The catalytic performance of the supported catalysts was tested in the gas-phase propene epoxidation reaction using H-2 and O-2 at a space velocity of 4000 h(-1), and atmospheric pressure. Ag/TS-1 with 1.0-19.9 wt% Ag loading and a Ag particle size around 10-40 nm exhibited a selectivity above 90% in the propene epoxidation reaction at a suitable temperature. Catalysts with high Ag loading and large Ag size cause H-2 combustion in O-2, leading to propene combustion. The heat evolved in the reaction process may lead to over-oxidation of propene to CO2.
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- 否
