Ethylene Polymerization Using Improved Polyethylene Catalyst

Abstract

Abstract: The study concerns the use of MgCl₂-supported high-activity Ziegler-Natta catalysts for the polymerization of ethylene.In particular,two types of catalysts were investigated,which were N-catalyst(BRICI)and improved polyethylene catalyst.The effects of catalyst structure on kinetic behavior were examined.The distribution of active centers in these catalysts was investigated by energy dispersive analysis by X-rays(EDAX),and morphologies of catalyst particles and polymer products were examined by scanning electron microscope(SEM).Hydrogen response and copolymerization performance were investigated and compared with the two catalysts.The results were correlated with the kinetic behavior of the two catalysts and appropriate models for polymer particle growth were presented.The improved polyethylene catalyst showed higher activity,better hydrogen response and copolymerization performance.

Key words: polyethylene catalyst, polyethylene, slurry polymerization process, ethoxy group

摘要： The study concerns the use of MgCl₂-supported high-activity Ziegler-Natta catalysts for the polymerization of ethylene.In particular,two types of catalysts were investigated,which were N-catalyst(BRICI)and improved polyethylene catalyst.The effects of catalyst structure on kinetic behavior were examined.The distribution of active centers in these catalysts was investigated by energy dispersive analysis by X-rays(EDAX),and morphologies of catalyst particles and polymer products were examined by scanning electron microscope(SEM).Hydrogen response and copolymerization performance were investigated and compared with the two catalysts.The results were correlated with the kinetic behavior of the two catalysts and appropriate models for polymer particle growth were presented.The improved polyethylene catalyst showed higher activity,better hydrogen response and copolymerization performance.

关键词: polyethylene catalyst, polyethylene, slurry polymerization process, ethoxy group

ZHU Xiaoheng, GUO Zifang, CEN Wei, MAO Bingquan. Ethylene Polymerization Using Improved Polyethylene Catalyst[J]. , 2011, 19(1): 52-56.

朱孝恒, 郭子芳, 岑为, 毛炳权. Ethylene Polymerization Using Improved Polyethylene Catalyst[J]. , 2011, 19(1): 52-56.

References

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