以铁化合物Fe(CF3SO3)2为催化剂,烷基铝为助催化剂,亚磷酸二异辛脂(P8)为给电子体,研究了该催化体系对丁二烯的聚合行为.结果表明,催化体系(n(Fe)∶n(P8)∶n(Al)=1∶4∶20)具有良好的聚合活性和间同立构选择性,并且聚合活性和间同立构选择性随聚合温度升高而增加,50℃时可得到1,2-结构含量大于85％、间规度达99％以上的间同1,2-聚丁二烯；该催化体系具有很好的立体选择性和温度耐受性,克服了以往铁系催化体系立体选择性差、需要低温聚合的缺点,并且催化体系不涉及使用有毒、有害的催化剂组分.
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