Effect of the Different Cocatalyst on Ethylene Polymerization in Performance of Ni (П) α-diimine Complex

In this research work, ethylene polymerization carry out using 1,4-bis(2,6- diisopropylphenyl)- acenaphthenediiminediboromonickel (II) (1) complex activated with ethylaluminium sesquichloride (EASC) and triisobutyl aluminum (TIBA). The effect of parameters (temperature, ethylene pressure and cocatalyst to catalystmolar ratio (CC)) on the polymerization process has been investigated using regression models of responsescatalyst activity, and visualize via the response surface method (RSM). The results indicated that activity of this complex and the properties of the polymeric materials are strongly influenced by the polymerization condition. The activities achieved with EASC activated complex 1, challenge the best reported activities for Ni(II) catalysts in the presence of, attaining about 3907 [kg PE(mol Ni)-1.h-1] and with triisobutyl aluminum (TIBA) about 1500 [kg PE(mol Ni)-1.h-1] at 10°C,5 bar and CC equal to 3000

کلیدواژه ها:

Ethylene polymerization ، Ni(II) complex ، Response surface method (RSM) ، chlorine-free alkyl aluminum