期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 16, 期 6, 页码 1812-1818出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200902495
关键词
heterogeneous catalysis; ionic liquids; metal scavenging; microspheres; nanoparticles
资金
- National Basic Research Program of China [2009CB623401]
- National Science Foundation of China [20802071, 50825302, 5067308]
- Postdoctoral Science Foundation of China [20070410321, 200801354]
Novel guanidinium ionic liquid-grafted rigid poly(p-phenylene) (PPIL) microspheres have been developed for metal scavenging and catalysis. The noble-metal nanoparticles supported on the microspheres surface can be used as efficient heterogeneous catalysts. The combination of nanoparticles and ionic liquid fragments on the microsphere surfaces enhance the activity and durability of the catalyst. The PPPIL-Pd-0 catalyst has been tested in the Suzuki cross-coupling reaction, and exhibits much higher catalytic activity than Pd catalysts supported on porous polymer matrices. The PPPIL.Pd-0 catalyst can be recycled at least for nine runs without any significant loss of activity. Tie present approach may, therefore, have potential applications in transition-metal-nanocatalyzed reactions.
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