个人信息Personal Information
副教授
博士生导师
硕士生导师
主要任职:Associate Professor
其他任职:系教工党支部书记
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:工业催化. 能源化工
办公地点:大连理工大学西校区化工实验楼B421
电子邮箱:lium@dlut.edu.cn
Gas-phase propene epoxidation over Ag/TS-1 prepared by plasma sputtering
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论文类型:期刊论文
发表时间:2011-04-01
发表刊物:REACTION KINETICS MECHANISMS AND CATALYSIS
收录刊物:SCIE、EI
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.