不同结构茂金属催化剂催化1-癸烯齐聚

采用不同结构茂金属催化剂催化1-癸烯齐聚反应，考察齐聚反应条件对1-癸烯齐聚及产物分布的影响。结果表明：不同结构的茂金属对1-癸烯的催化活性和齐聚物组分分布影响显著，非桥联茂金属、大位阻的茂金属、限制构型的茂金属以及双核硅桥联的茂金属主要合成低黏度齐聚物(100 ℃运动黏度为2~5 mm2/s，二聚体含量大于50%)；Cs-对称型茂金属具有较高的催化活性，合成中等黏度的齐聚物 (100 ℃运动黏度大于30 mm2/s)。GC-MS分析结果表明，茂金属催化合成的齐聚物主要由二聚体到五聚体的混合物组成。

OLIGOMERIZATION OF 1-DECENE WITH DIFFERENT STRUCTURE METALLOCENE CATALYSTS

The oligomerization of 1-decene was catalyzed by metallocene catalysts with different structures and the effect of conditions on 1-decene oligomerization reaction and properties of oligomers were invesgated as well. It is found that the structure of metallocene catalysts affects the catalytic behavior and the distribution of oligomer components significantly. The unbridged metallocene catalysts, sterically hindered metallocene catalysts, constrained geometry configuration metallocene catalysts, and silicon-bridged binuclear metallocene catalysts mainly produce low viscosity oligomers (kinematic viscosity at 100 ℃: 2-5 mm2/s) with dimer content more than 50%); it is interested to find that Cs symmetrical metallocene catalysts show a higher activity and primarily produce medium-high viscosity oligomers (kinematic viscosity at 100 ℃ >30 mm2/s). The GC-MS results demonstrate that the oligomer mixture is composed of dimer to pentamer.