Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, 312000, China.
Int J Biol Macromol. 2013 Apr;55:240-5. doi: 10.1016/j.ijbiomac.2013.01.016. Epub 2013 Jan 31.
Significant enhancement of the catalytic stability and activity was obtained for the heterogeneous palladium catalyst supported on the shell powders-reinforced chitosan microspheres. For example, over 90% cross-coupling yields were achieved using as low as 0.05 mol% palladium catalyst loading for the Heck-type reaction of iodobenzene with n-butyl acrylate. Such significant enhancement of the catalytic stability and activity can be attributed to the intermolecular interactions of the surface polar molecules of the incorporated shell powders with the surrounding chitosan molecules as well as the deposited palladium species.
壳聚糖微球负载的钯催化剂在非均相催化中表现出显著的催化稳定性和活性增强。例如，在碘苯与丙烯酸丁酯的 Heck 型反应中，使用低至 0.05mol%的钯催化剂负载量即可获得超过 90%的偶联产率。这种显著的催化稳定性和活性增强可归因于壳聚糖分子与周围壳聚糖分子以及沉积的钯物种之间的表面极性分子的分子间相互作用。
