پديدآورندگان :
Avar S m.mortazavi@ippi.ac.ir Department of Catalyst, Iran Polymer and Petrochemical Institute, Tehran, Iran , KhoshSefat M Department of Catalyst, Iran Polymer and Petrochemical Institute, Tehran, Iran , Karimi M Department of Catalyst, Iran Polymer and Petrochemical Institute, Tehran, Iran , Mortazavi S. M. M Department of Catalyst, Iran Polymer and Petrochemical Institute, Tehran, Iran , Ahmadjo S Department of Catalyst, Iran Polymer and Petrochemical Institute, Tehran, Iran , Zohuri G. H Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
كليدواژه :
1 , Hexene , Polymerization , Late Transition Metal Catalysts , α , Diimine Nickel , Cocatalyst.
چكيده فارسي :
Two Nickel-based catalysts of 1,4-bis(2,6-diisopropylphenyl)-butanediiminedichloro-nickel(II) (1a) and 1,4-bis(2,6 diisopropylphenyl)-acenaphthenediiminedibromo-nickel(II) (2a) was used in polymerization of 1-hexene. In order to study on the influence of reaction condition ([Al] /[Ni] molar ratio) and structure effect of catalyst (diimine backbone) on the activity and average molecular weight (Mv), experiments performed under identical manner. The results revealed that catalyst 1a produced poly (1-Hexene) with higher Mv and less activity than catalyst 2a using DEAC (diethylaluminium chloride) and ethylaluminum sesquichloride (EASC) as cocatalysts. Also the highest activity obtained for both catalysts using DEAC at [Al]/[Ni]=700. In addition, EASC demonstrated higher activity than DEAC at the same polymerization conditions for each catalyst.
