物理化学学报 >> 2001, Vol. 17 >> Issue (05): 460-464.doi: 10.3866/PKU.WHXB20010517

研究简报 上一篇    下一篇

镍催化剂乙烯聚合原位UV-Vis光谱研究

杨志洪;罗河宽;毛炳权;唐瑞国;余鼎声;王桂花   

  1. 北京化工研究院,北京 100013;北京化工大学材料科学与工程学院,北京 100029
  • 收稿日期:2000-09-05 修回日期:2000-11-14 发布日期:2001-05-15
  • 通讯作者: 罗河宽 E-mail:hekuanluo@brici.ac.cn

In Situ UVVis Studies on Nickel Catalyst for Ethylene Polymerization

Yang Zhi-Hong;Luo He-Kuan;Mao Bing-Quan;Tang Rui-Guo;Yu Ding-Sheng;Wang Gui-Hua   

  1. Beijing Research Institute of Chemical Industry,Beijing 100013;Beijing University of Chemical Technology, Beijing  100029
  • Received:2000-09-05 Revised:2000-11-14 Published:2001-05-15
  • Contact: Luo He-Kuan E-mail:hekuanluo@brici.ac.cn

关键词: α-二亚胺, 镍, UV-Vis, 乙烯, 聚合

Abstract: An apparatus was set up for in situ UVVis determintion of ethylene polymerization under atmospheric pressure. In three different solvents, tetrahydrofuran(THF), chlorobenzene and dimethyl formamide (DMF), and using MAO as cocatalyst, α-iimine/nickel catalytic system was prepared for ethylene polymerization with the UVVis testing system. In THF, active peak at 545 nm and inactive peak at 660 nm were observed. In chlorobenzene, active peak at 520 nm, 570 nm, and inactive peak at 660 nm were also observed. The regularities of growth and disappearence of active peaks were investigated. The structure of active species and solvent effect were discussed.

Key words: α-iimine, Nickel, UV-Vis, Ethylene, Polymerization