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本工作以加氢汽油为溶剂,考察了MoCl_2 (RCOO)_2-(i-Bu)_2AlO-体系对丁二烯聚合的催化行为,并研究了聚合条件对催化活性、聚合物分子量及其分布以及微观结构的影响。结果表明,本催化体系具有很高的催化活性;主催化剂MoCl_2(RCOO)_2 中R基(正烷基、异烷基、苯基)的种类和碳原子数对丁二烯的转化率没有明显影响;除聚合温度对聚合物的微观结构有影响外,其他聚合条件都几乎不影响单体的插入方式;1,2-链节的立构体中以全同链节含量较高,可达60％。
In this work, the catalytic behavior of MoCl_2 (i-Bu) _2AlO-system on the polymerization of butadiene was investigated using hydrogenated gasoline as solvent. The effects of polymerization conditions on the catalytic activity, molecular weight and distribution of the polymer, Effect of microstructure. The results show that the catalytic system has high catalytic activity; the type and carbon number of R groups (normal alkyl, isoalkyl, phenyl) in the main catalyst MoCl_2 (RCOO) _2 have no obvious effect on the conversion of butadiene Influence; In addition to the polymerization temperature of the microstructure of the polymer have an impact, the other polymerization conditions have almost no effect on the insertion of monomers; 1,2-chain structure of the stereosynthesis in the same chain content is high, up to 60%.