叶龙武
教授 博士生导师
厦门大学 化学化工学院
有机合成方法学:基于炔烃转化的选择性控制与多样性合成; 功能分子合成:生物活性分子、天然产物及药物的合成。
个性化签名
- 姓名:叶龙武
- 目前身份:在职研究人员
- 担任导师情况:博士生导师
- 学位:
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学术头衔:
- 职称:高级-教授
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学科领域:
化学
- 研究兴趣:有机合成方法学:基于炔烃转化的选择性控制与多样性合成; 功能分子合成:生物活性分子、天然产物及药物的合成。
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-1年11月30日
in this study, a series of aryloxy-aluminoxanes originated directly from the hydrolysis of reaction products of alme_3 and phenols were synthesized, which could serve as effective polymer-retarding activators for the iron-catalyzed ethylene oligomerization.the molar ratios of [phoh]/[alme_3] and [h_2o]/[al] during the preparation were explored and their impacts on the oligomerization activity and product distribution were discussed. to obtain the effective activators with good polymer-retarding effect and relatively high activity, the optimized conditions were proposed to be [phoh]/[alme_3] = 0.5 and [h_2o]/[al] = 0.7. various aluminoxanes with different[―oh] sources confirmed the importance of using phenols in preparing the effective polymer-retarding activators. by utilizing these aryloxy-aluminoxanes, the mass fraction of polymers in the total products could be reduced to lower than 1.0 wt%, which is much lower than that of the mao-activated systems(> 30 wt%). this is a potential benefit for the industrial application of the iron-catalyzed oligomerization process.
thylene oligomerization bis(, imino), pyridyl iron catalysts aryloxy-aluminoxanes phenols trimethylaluminum hydrolysis
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