甲基铝氧烷

经甲基铝氧烷（MAO）活化，化合物2在较低Al/Zr比条件下既可有效地催化乙烯聚合，生成高分子量、高熔化温度聚乙烯。

Upon activation with methylaluminoxane ( MAO ), 2 effectively polymerizes ethylene and produces high molecular weight polyethylenes with high melting transition temperatures at low Al / Zr ratios .

研究了负载催化剂Et（Ind）2ZrCl2/SiO2在甲基铝氧烷活化下，催化乙烯与苯乙烯的共聚，采用DSC和NMR表征了所得共聚物，13C-NMR谱表明共聚物中苯乙烯单元呈无规分布。

The copolymerization of ethylene and styrene was investigated via supported Zirconocene , Et ( Ind ) _2ZrCl_2 / SiO_2 , activated with MAO . The copolymer was characterized by DSC and ~ 13 C-NMR . It revealed that the distribution of styrene unit in the copolymer was in random .

研究了cat/MAO（甲基铝氧烷）催化体系对苯乙烯的均聚合。

The syndiotactic homopolymerization of styrene with cat / methylaluminoxane ( MAO ) was performed .

钴系双亚胺基吡啶配合物/甲基铝氧烷体系催化乙烯齐聚

Ethylene oligomerization with cobalt-based catalysts bearing 2,6 - bis ( imino ) pyridyl ligands / methylaluminoxane

用含水硅胶作为三甲基铝的水解剂制备了甲基铝氧烷（MAO），研究了影响MAO收率及聚合活性的因素，得到了合成MAO的最佳反应条件。

The methylaluminoxane ( MAO ) was synthesized by hydrolysis of trimethyl aluminum ( TMA ) with silica gel con-taining water . The factors influenced the yield and the poly-merizing activity of MAO were discussed .