文献类型：期刊文献

英文题名：Ionic Liquid Immobilized Nickel(0) Nanoparticles as Stable and Highly Efficient Catalysts for Selective Hydrogenation in the Aqueous Phase

作者：Hu, Yu[1];Yu, Yinyin[1];Hou, Zhenshan[1];Yang, Hanming[2,3];Feng, Bo[1];Li, Huan[1];Qiao, Yunxiang[1];Wang, Xiangrui[1];Hua, Li[1];Pan, Zhenyan[1];Zhao, Xiuge[1]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[2]S Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, State Ethn Affairs Commiss, Wuhan 430074, Hubei Province, Peoples R China;[3]S Cent Univ Nationalities, Minist Educ, Wuhan 430074, Hubei Province, Peoples R China

年份：2010

卷号：5

期号：5

起止页码：1178

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20101912916127);WOS:【SCI-EXPANDED(收录号:WOS:000277724800020)】；

基金：We are grateful for 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. We would also like to thank Prof. Walter Leitner for helpful suggestions and Dr. Nils Theyssen for assistance with the experiments.

语种：英文

外文关键词：heterogeneous catalysis; hydrogenation; ionic liquids; nanoparticles; nickel

摘要：Nickel nanoparticles (NPs) well-dispersed in the aqueous phase were conveniently prepared by reducing nickel(II) salt with hydrazine in the presence of the functionalized ionic liquid 1-(3-aminopropyl)-2,3-dimethylimidazolium bromide. UV/Vis spectroscopy, elemental analysis, thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) show the presence of a weak interaction of the functionalized ionic liquid with Ni-II and Ni-0 complexes. The face-centered cubic structure of the Ni-0 NPs was confirmed by X-ray diffraction (XRD) characterization. Transmission electron microscopy (TEM) images reveal that smaller Ni-0 particles of approximately 6-7 nm average diameter assemble to give larger, blackberry-shaped particles with an average diameter of around 35 nm. The Ni NPs were employed as highly efficient catalysts for the selective hydrogenation of C=C double bonds in the aqueous phase under mild reaction conditions (40-90 degrees C at 1.0-3.0 MPa), and the Ni-0 nanocatalysts in the aqueous phase are stable enough to be reused at least seven times without significant loss of catalytic activity during subsequent reuse cycles.