【摘要】 以聚丙烯接枝马来酸酐聚合物及 Si O2 为载体 ,以 3-氨基三乙氧基硅烷为偶联剂 ,制备了有机 /无机复合载体 .将此载体经 MAO处理后负载 Ti Cl4制得负载型催化剂 .用光电子能谱追踪了负载催化剂的制备过程 ,结果表明 ,在复合载体催化剂中存在两种可能的活性中心更多还原

【Abstract】 Polypropylene grafted maleic anhydride and silica crosslinked by 3 aminopropyl triethyoxysilane as the support for titanium catalysts has been studied. Results from XPS suggest that there are two possible cationic active species in composite supported catalyst.更多还原