文献类型：期刊文献

英文题名：Biphasic hydrogenation of olefins by functionalized ionic liquid-stabilized palladium nanoparticles

作者：Hu, Yu[1];Yu, Yinyin[1];Hou, Zhenshan[1];Li, Huan[1];Zhao, Xiuge[1];Feng, Bo[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Adv Mat Lab, Shanghai 200237, Peoples R China

年份：2008

卷号：350

期号：13

起止页码：2077

外文期刊名：ADVANCED SYNTHESIS & CATALYSIS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000259544300024)】；

基金：The authors are grateful for the support from the National Natural Science Foundation of China (No. 20773037), ECUST (No. YJ0142136), and the Commission of Science and Technology of Shanghai Municipality (No. 07J14023), China. The author would. also like to express their thanks to Prof. Walter Leitner for helpful suggestions and Dr. Nils Theyssen for experimental assistance.

语种：英文

外文关键词：hydrogenation; ionic liquid; nanoparticles; olefins; palladium

摘要：Palladium nanoparticles in the size range of 5-6 nm were prepared conveniently by reducing palladium(II) with atmospheric pressure hydrogen and stabilized by 2,2'-dipyridylamine-functionalized imidazolium cations according to our approach. The efficient catalytic conversion of cyclohexene into cyclohexane by the functionalized ionic liquid-stabilized palladium nanoparticles has been performed under very mild hydrogen pressure (0.1 MPa) and at 35 degrees C. It was found that the concentration of palladium and the reaction temperature considerably affected the size and degree of aggregation of Pd nanoparticles in ionic liquid, which further changed the performance of the catalyst activity. The synthesized nanocatalysts can be recycled at least five times without any loss of the activity. Finally, the scope of substrates was also investigated. The excellent catalytic activity of the present system can be attributed to good stabilization and high dispersion of palladium nanoparticles.