| 钛基系烯烃聚合催化剂的EPR研究 |
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| 引用本文： | 曾金龙,许金来,郑荣辉,陈慧玲,郑宗敏,陈祖炳. 钛基系烯烃聚合催化剂的EPR研究[J]. 厦门大学学报(自然科学版), 1988, 0(5) |
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| 作者姓名： | 曾金龙 许金来 郑荣辉 陈慧玲 郑宗敏 陈祖炳 |
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| 作者单位： | 厦门大学化学系，厦门大学物理化学所 |
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| 摘 要： | EPR法研究了Ti(OBu),Ti(OBu)_3Cl,Ti(OBu)_2Cl_2,Ti(OBu)Cl_3和MgCl_2-n-BuOH-Ti(OBu)_4,MgCl_2-n-BuOH-Ti(OBu)_4-TiCl_4,MgCl_2-n-BaOH-SiCl_4-TiCl_4分别与Al(i-Bu)_3相互作用的结果表明,载体及配位体的特性都会影响到中心Ti~(3+)离子的EPR特征。通过干燥氯化氢处理和添加电子给予体改善了催化剂晶体结构规整性,表观上呈现对称性较好的EPR谱,在丙烯聚合时相应地表现出较高的定向性。
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| 关 键 词： | 钛 催化剂 电子自旋共振 烯烃聚合 |
EPR Studies of Ti-Mg Catalyst for Olefin Polymerization |
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| Zeng Jinlong Xu Jinlai Zheng Ronghui Chen Huiling Zeng Zhongmin Chen Zubing. EPR Studies of Ti-Mg Catalyst for Olefin Polymerization[J]. Journal of Xiamen University(Natural Science), 1988, 0(5) |
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| Authors: | Zeng Jinlong Xu Jinlai Zheng Ronghui Chen Huiling Zeng Zhongmin Chen Zubing |
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| Abstract: | The interactions of Ti(OBu)4, Ti(OBu)3Cl, Ti(OBu)2Cl2, Ti(OBu)Cl3 and MgCl2-n-BuOH-Ti(OBu)4, MgCl2-n-BuOH-Ti (OBu)4-TiCl2, MgCl2-n-BuOH-SiCl4-TiCl4 with Al(i-Bu)3 were studied by EPR. The results showed that the EPR characteristic of the central Ti3+ ion is influenced by the specificity of the carrier and coordination compound. The regularity of the crystal structure of the catalyst is improved by pre-treating with dry hydro-chloride and the addition of electron donor. Apparently EPR spectra showed higher symmetry. The catalyst possesses higher sterospecificity for propene polymerization. |
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| Keywords: | Titaaium Catalyst EPR Olefin polymerization |
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