| 载体中元素电负性对稀土催化剂聚合活性的影响 |
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| 引用本文： | 张成林,单成基. 载体中元素电负性对稀土催化剂聚合活性的影响[J]. 应用化学, 2001, 18(4): 321-0 |
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| 作者姓名： | 张成林 单成基 |
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| 作者单位： | 中科院长春应化所，中国科学院长春应用化学研究所，中国科学院长春应化所 |
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| 基金项目： | 中国科学院院长基金资助项目(031596) |
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| 摘 要： | 载体稀土催化剂;丁二烯聚合;载体中元素电负性对稀土催化剂聚合活性的影响
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| 关 键 词： | 载体稀土催化剂 丁二烯聚合 载体中元素电负性对稀土催化剂聚合活性的影响 |
| 文章编号： | 1000-0518(2001)04-0321-03 |
| 收稿时间： | 2009-06-29 |
| 修稿时间： | 2000-07-20 |
Effect ofElectronegativity of the EleSupporters on the lymerization Activity of Supported RareEarth Catalysts |
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| ZHANG Cheng-lin,SHAN Cheng-ji. Effect ofElectronegativity of the EleSupporters on the lymerization Activity of Supported RareEarth Catalysts[J]. Chinese Journal of Applied Chemistry, 2001, 18(4): 321-0 |
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| Authors: | ZHANG Cheng-lin SHAN Cheng-ji |
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| Affiliation: | ZHANG Cheng Lin,SHAN Cheng Ji * |
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| Abstract: | Supported rare earth catalysts were made from Nd (O-i-Pr)3 and the chlorides as well asbromides of the elements of I A and Ⅱ A groups which were used as supporters of the catalyst. In thestudy on the relationship between the composition of supporters and the polymerization activity of bu-tadiene in the presence of the supported rare earth catalysts, it was found that the electronegativity of I A or Ⅱ A elements has an obvious effect on the activity of supported catalysts, that is the activity ofthe supported catalyst increases with the increasing of the electronegativity. This phenomenon is ex-plained in terms of the interaction between the HOMO of the butadiene and the LUMO of theneodymium. This rule also holds in the case when halides of magnesium were used as supporters. |
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| Keywords: | rare earth supported catalyst Ziegler Natta catalyst butadiene polymerization catalytical activity |
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