功能化聚苯乙烯树脂负载钯催化剂在聚酮合成中的应用

Copolymerization of Polyketone Catalyzed by Resin-Supported Palladium Functional Polystyrene

采用苯乙烯与二乙烯基苯交联合成聚苯乙烯树脂微球,通过一系列反应后得到表面接枝双齿氮的功能化树脂微球.以负载有乙酸钯的功能化树脂微球组成的催化体系催化一氧化碳和苯乙烯共聚合成聚酮.利用红外光谱和扫描电镜对树脂负载催化剂及聚合产物进行了表征.研究了催化体系中各组分用量及反应时间对共聚反应的影响.结果表明,树脂负载催化剂对聚酮合成反应具有较好的催化性能:当树脂用量为0.5 g、乙酸钯为22.4 mg时,聚酮产量达8.6606 g.

The crosslinked polymer polystyrene was synthesized by suspension polymerization using styrene and divinylbenzene and the polymer-based chelating nitrogen ligands was synthesized from the polystyrene. Polyketone was prepared by the copolymerization of carbon monoxide and styrene catalyzed by polymer-based chelating nitrogen ligands resin-supported palladium acetate. The resin-supported catalyst and the copolymerization product were characterized by infrared spectroscopy and scanning electron microscopy. Effects of components of catalytic system and reaction time on the catalytic activity were studied. The reusability of the resin-supported catalyst was also investigated. Results indicated that the resin-supported catalyst had excellent catalytic property. The yield of polyketone was 8. 660 6 g when resin amount was 0.5 g and the palladium acetate amount was 22.4 mg.