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考察三甲基铝（ＴＭＡ） 部分水解法制备固体改性甲基铝氧烷（ｍ ＭＡＯ） 时，反应物Ｈ２Ｏ 和ＴＭＡ 的摩尔比对ｍ ＭＡＯ 的产量及ｍ ＭＡＯ 中ＴＭＡ 含量的影响；以五甲基茂基三苄氧基钛［Ｃｐ ＊ Ｔｉ（ＯＢｚ）３］／ｍ ＭＡＯ 组成的均相催化体系，分别考察ｍ ＭＡＯ 的用量［ 即Ａｌ／Ｔｉ 摩尔比］ 及ｍ ＭＡＯ 中ＴＭＡ 含量对苯乙烯间规聚合和乙烯聚合的影响．通过分析Ｃｐ ＊ Ｔｉ（ＯＢｚ）３／ｍ ＭＡＯ 催化体系钛氧化态的分布，发现Ｔｉ（ Ⅲ） 活性中心有利于合成间规聚苯乙烯；而Ｔｉ（ Ⅳ） 活性中心有利于合成聚乙烯．苯乙烯间规聚合时，外加三异丁基铝（ＴＩＢＡ） ，将提高催化活性，同时可节省ＭＡＯ 用量．
The effect of molar ratio of reactants H2O and TMA on the yield of m-MAO and the content of TMA in m-MAO was investigated when preparing partially-modified methyl alumoxane (m MAO) by partial hydrolysis of trimethylaluminum (TMA) Methylcyclopentadienyl titanate [Cp * Ti (OBz) 3] / m MAO homogeneous catalyst system were investigated m MAO amount [ie Al / Ti molar ratio] and m MAO TMA content of styrene Syndiotactic polymerization and ethylene polymerization. Through the analysis of the oxidation state of titanium in Cp * Ti (OBz) 3 / m MAO system, it is found that the active center of Ti (Ⅲ) is conducive to the synthesis of syndiotactic polystyrene; and Ti (Ⅳ) active center is conducive to the synthesis of polyethylene. Syndiotactic polymerization of styrene, with addition of triisobutylaluminum (TIBA), will increase the catalytic activity while saving the amount of MAO used.