Iron(II) and cobalt(II) tris(2-pyridyl)phosphine and tris(2-pyridyl)amine catalysts for the ethylene polymerization

详细信息	查看全文 | 推荐本文 |

• 作者：Arquí ; medes Karam ; Rita Tenia ; Marí ; a Martí ; nez ; Francisco L&#xf3 ; pez-Linares ; Carmen Albano ; Antonio Diaz-Barrios ; Yanixia Sá ; nchez ; Edgar Catarí ; Emilio Casas ; Sara Pekerar ;
• 关键词：Iron(II) ; Cobalt(II) ; Tris(2-pyridyl)phosphine ; Tris(2-pyridyl)amine ; Ethylene ; 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：16 March 2007
• 卷：265
• 期：1-2
• 页码：127-132
• 文件大小：277 K

摘要

Polyethylene was synthesized using iron(II) and cobalt(II) complexes stabilized by tris(2-pyridyl)X (X = N, P) ligands in the presence of methylaluminoxane (MAO) as cocatalyst. The catalysts showed activities ranging from moderate to high. The iron complexes showed higher activities than the cobalt analogous and it was found that the bridgehead atom of the ligand tpX (X = P, N) did not affect significantly the activity of the active species as well as the molecular weight of the polymers. The polyethylenes obtained were classified as HDPE with linear structure and broad monomodal distribution.