【摘要】 采用由乙酸钯、 2 ,2’ 联吡啶与强酸组成的催化体系 ,催化一氧化碳和苯乙烯的共聚反应合成聚酮(STCO)。研究了氨基磺酸、氟硼酸及对甲苯磺酸的助催化作用 ,并探讨了其催化机理。采用红外光谱 (IR)、差示扫描量热分析 (DSC)、热重分析 (DTG)等方法表征共聚产物。结果表明 ,氨基磺酸、对甲苯磺酸对聚合反应表现出很高的催化活性 ,最高活性以每 gPd催化剂上获得的STCO的质量计达 5 93g ;氟硼酸体系中加入五氧化二磷可显著提高聚合反应的催化活性。更多还原

【Abstract】 Polyketone (STCO) was prepared by the copolymerization of carbon monoxide and styrene catalyzed by a composite catalyst system- palladium acetate,2,2’ bipyrodine associated with a strong acid.The research was concentrated on the co catalysis effect and the related catalytic mechanism of strong acids,such as amino sulfonic acid, p toluenesulfonic acid and fluoroboric acid.The prepared copolymer was characterized by IR,DSC and DTG.Both amino sulfonic acid and p toluenesulfonic acid showed high catalytic activity.The maximum catalytic activity reached 593?g STCO per g Pd in 1h.By adding P 2O 5,the catalytic activity of fluoroboric acid was greatly improved.更多还原