| 聚乙烯载体催化剂的制备与表征 |
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| 引用本文： | 朱宁,孙文华,李子龙,邵长星,胡友良,何嘉松. 聚乙烯载体催化剂的制备与表征[J]. 高等学校化学学报, 2001, 22(Z1): 208-210 |
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| 作者姓名： | 朱宁 孙文华 李子龙 邵长星 胡友良 何嘉松 |
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| 作者单位： | 中囯科学院化学研究所分子科学中心工程塑料国家重点实验室, 北京 100080 |
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| 基金项目： | 中国科学院知识创新工程项目,中国科学院"百人计划",KGCX203-2,,, |
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| 摘 要： | 不同目数的聚乙烯粉末通过辐射方法接枝了4-乙烯基吡啶官能团.经甲基铝氧烷(MAO)预处理后负载了茂金属催化剂Cp2ZrCl2.光电子能谱和红外光谱结果表明催化剂通过MAO的作用负载在聚乙烯接枝4-乙烯基吡啶聚合物上.4-乙烯基吡啶的接枝含量、催化剂的负载率以及载体催化剂对乙烯单体的活性均随着聚乙烯粉末的颗粒减小而增大.
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| 关 键 词： | 聚乙烯辐射接枝4-乙烯基吡啶 载体 Cp2ZrCl2 |
| 文章编号： | 0251-0790(2001)10Z-208-03 |
| 收稿时间： | 2001-08-14 |
| 修稿时间： | 2001-08-14 |
Preparation and Characterization of Novel Polyethylene Supported Metallocene Catalysts |
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| ZHU Ning,SUN Wen-Hua,LI Zi-Long,SHAO Chang-Xing,HU You-Liang,HE Jia-Song. Preparation and Characterization of Novel Polyethylene Supported Metallocene Catalysts[J]. Chemical Research In Chinese Universities, 2001, 22(Z1): 208-210 |
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| Authors: | ZHU Ning SUN Wen-Hua LI Zi-Long SHAO Chang-Xing HU You-Liang HE Jia-Song |
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| Affiliation: | State Key Laboratory of Engineering Plastics and The Center for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | Different meshes powder of polyethylene grafting 4-vinylpyridine copolymers (PEVP) has been produced through the irradiation method. After pretreated with Methylaluminoxane (MAO), the copolymers were used as the supports for Cp2ZrCl2 catalyst. Results of XPS and FTIR measurements show that the catalytic sites have been bridged through MAO on the polyethylene carrier. The percentages of grafting 4-vinylpyridine and supported Cp2ZrCl2 depend on the size of polyethylene powder. The smaller the polyethylene powder, the more percent 4-vinylpyridine group and the Cp2ZrCl2 on the polyethylene chains, and the polyethylene-supported catalyst has a much higher activity for ethylene polymerization. |
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| Keywords: | Cp2ZrC12 |
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