writer：Shenghai Li, Junhua Wang, Yongli Kou, and Suobo Zhang*
keywords：ionic liquids, metal scavenging, microspheres, nanoparticles
source：期刊
specific source：Chem. Eur. J.
Issue time：2010年
Novel guanidinium ionic liquid-grafted rigid poly(p-phenylene) (PPPIL) 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·Pd0 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·Pd0 catalyst can be recycled at least for nine runs without any significant loss of activity. The present approach may, therefore, have potential applications in transition-metal-nanocatalyzed reactions.