Abstract
Abstract The catalyst composed of zirconium tetrachloride(ZrCl 4 ), triethylaluminum (TEA), and ethylaluminum sesquichloride(EASC) was found to be an industrial useful catalyst for the oligomerization of ethylene[1–4]. The coordinative interaction of various organoaluminums with Zr and of various additives with Zr and Al was studied by 27 Al NMR, 1 H NMR and 2D NMR. The catalytic activity was influenced by coordinating of TEA to ZrCl 4 , and α-olefin purity and polymer by-product were influenced by coordinating of additives to Zr and organoaluminum co-catalysts.
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