Beneficial influence of nanocarbon on the aryliminopyridylnickel chloride catalyzed ethylene polymerization
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- 作者：Liping Zhang ; Erlin Yue ; Boping Liu ; Philippe Serp ; Carl Redshaw ; Wen-Hua Sun ; J茅r么me Dur
- 关键词：Branching polyethylene ; Carbon nanotubes ; Ethylene polymerization ; Graphene ; 2-Iminopyridylnickel complex
- 刊名：Catalysis Communications
- 出版年：5 January, 2014
- 年：2014
- 卷：43
- 期：Complete
- 页码：227-230
- 全文大小：744 K
文摘
A series of 1-aryliminoethylpyridine ligands (L1鈥昄3) was synthesized by condensation of 2-acetylpyridine with 1-aminonaphthalene, 2-aminoanthracene or 1-aminopyrene, respectively. Reaction with nickel dichloride afforded the corresponding nickel (II) chloride complexes (Ni1-Ni3). All compounds were fully characterized and the molecular structures of Ni1 and Ni3 are reported. Upon activation with methylaluminoxane (MAO), all nickel complexes exhibit high activities for ethylene polymerization, producing waxes of low molecular weight and narrow polydispersity. The presence of multi-walled carbon nanotubes (MWCNTs) or few layer graphene (FLG) in the catalytic medium can lead to an increase of productivity associated to a modification of the polymer structure.