SUPPORTED BIPOLYMER-PALLADIUM CATALYSTS I. The Preparations of Poly[vinylpyridine] -Poly[styrene-maleic acid] -Palladium Catalyst Supported on Silica and Their Hydrogenation Behaviors
硅胶负载的双高分子-钯催化剂的研究——Ⅰ.硅胶负载的聚[4(2)-乙烯吡啶]-聚[苯乙烯-顺丁烯二酸]-钯催化剂的合成及其催化加氢性能

The Poly 4-vinylpyridine] (P4VP) or Poly2-vinylpyridine] (P2VP)-Polystyrene-ma-leic acid] (PSM)-Palladium catalysts supported on silica (P4VP-PSM-Pd/SiO2 and P2VP-PSM-Pd/SiO2) were prepared. The catalysts were used to catalyze the hydrogenation of methy-lacrylate under mild conditions. The effects of the compositions of catalysts on the catalytic behaviors were investigated, it was found that the catalyst composed of both P4VP (or P2VP) and PSM exhibits higher activity than that composed of either of them and the catalytic behavior was also influenced by the palladium content (Pb wt%)and polymer content of the catalyst. The calalysts can be reused without lossing activity and selectivity.