Control of the molecular weight distribution and tacticity in 1-hexylene polymerization catalyzed by TiCl₄/MgCl₂-NaCl/TEA catalysis system

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• 作者：Xue Jiang ; Xiuzhi Tian ; Zhiqiang Fan ; Kuanjun Fang ; Zhisheng Fu ; Junting Xu ; Qi Wang
• 关键词：Supported Ti catalyst ; NaCl ; 1-Hexylene ; Polymerization
• 刊名：Journal of Molecular Catalysis A ; Chemical
• 出版年：2007
• 期刊代码：57_13811169
• 类别：ch
• 出版时间：17 September 2007
• 卷：275
• 期：1-2
• 页码：72-76
• 文件大小：336 K

摘要

NaCl doped MgCl₂ supported TiCl₄ catalysts were used for 1-hexylene polymerizations in this paper. The catalysts’ activity, the molecular weight distribution and the tacticity of polyhexylene are influenced strongly by the doping of NaCl in MgCl₂, based on the polymerization experiment, the deconvolution analysis of molecular weight distribution (MWD) profiles and the ¹³C NMR analysis. The results show that it is possible to control the active center distribution of supported TiCl₄/MgCl₂ catalysts by doping of support with NaCl.