| 环烷氧基硅为内给电子体的负载型Ziegler-Natta催化剂合成宽分子量分布聚乙烯 |
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| 引用本文： | 余朦山,聂言培,周露,义建军,黄启谷,高克京,杨万泰.环烷氧基硅为内给电子体的负载型Ziegler-Natta催化剂合成宽分子量分布聚乙烯[J].中国炼油与石油化工,2014,16(2):91-96. |
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| 作者姓名： | 余朦山 聂言培 周露 义建军 黄启谷 高克京 杨万泰 |
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| 作者单位： | 1. 北京化工大学化工资源有效利用国家重点实验室，碳纤维及功能高分子教育部重点实验室;2. 北京化工大学;3. 中国石油石油化工研究院; |
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| 基金项目： | Acknowledgements： We sincerely thank the National Natural Science Foundation of China （No. 21174011）, the Natural Science Foundation of Beijing, （No. 2102036） and the PetroChina Innovation Fund （Grant No. 2011D-5006-0502）. |
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| 摘 要： | Two kinds of cycloalkoxy silane compounds were synthesized and used as the internal electron donors （IEDs） of supported Ziegler-Natta catalyst for ethylene polymerization to produce polyethylene with broader molecular weight distribution （MWD）, The effect of the structure and the amount of these IEDs on the polymerization performance was in- vestigated. The results implied that the molecular weight distribution of the obtained polyethylene could be adjusted by the incorporation of IEDs. SEM result showed that the morphology of catalyst particle was spherical and uniform in size distribution. The titanium content of these catalysts was higher, the active TiCl4 species were easily anchored on the support than that without adding IED, which was determined by ICE The GPC result confirmed that the polyethylene with broader molecular weight distribution in the range of from 23.4 to 25.6 was obtained using triethoxy-（-cyclopentyloxy）-silane （ED1） and triethoxy-（-cyclohexyloxyl）- silane （ED2） as the internal electron donors.
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| 关 键 词： | 负载型Ziegler-Natta催化剂 聚乙烯 宽分子量分布 给电子体 |
Synthesis of PE with Broad MWD Catalyzed by Supported Ziegler-Natta Catalyst Consisting of Cycloalkoxy Silane as IED |
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| Yu Mengshan,Nie Yanpei,Zhou Lu,Yi Jianjun,Huang Qigu,Gao Kejing,Yang Wantai.Synthesis of PE with Broad MWD Catalyzed by Supported Ziegler-Natta Catalyst Consisting of Cycloalkoxy Silane as IED[J].China Petroleum Processing and Petrochemical Technology,2014,16(2):91-96. |
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| Authors: | Yu Mengshan Nie Yanpei Zhou Lu Yi Jianjun Huang Qigu Gao Kejing Yang Wantai |
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| Affiliation: | 1. ;2. Petrochemical Research Institute, PetroChina Company Limited,; |
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| Abstract: | Two kinds of cycloalkoxy silane compounds were synthesized and used as the internal electron donors(IEDs) of supported Ziegler-Natta catalyst for ethylene polymerization to produce polyethylene with broader molecular weight distribution(MWD). The effect of the structure and the amount of these IEDs on the polymerization performance was investigated. The results implied that the molecular weight distribution of the obtained polyethylene could be adjusted by the incorporation of IEDs. SEM result showed that the morphology of catalyst particle was spherical and uniform in size distribution. The titanium content of these catalysts was higher, the active TiCl4 species were easily anchored on the support than that without adding IED, which was determined by ICP. The GPC result confirmed that the polyethylene with broader molecular weight distribution in the range of from 23.4 to 25.6 was obtained using triethoxy-(-cyclopentyloxy)-silane(ED1) and triethoxy-(-cyclohexyloxyl)- silane(ED2) as the internal electron donors. |
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| Keywords: | supported Ziegler-Natta catalyst polyethylene broader molecular weight distribution electron donor |
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