Abstract: In this paper, bis(1 - formyl -2 -naphthol)Ni(Ⅱ) complex was synthesized from 1- formyl -2-naphthol, this complex can be used as catalyst for propylene oligomerization. The complex was characterized by IR and UV spectrum. The thermal property of complex was determined by DSC. The complex bis(2 - hydroxyl -1 - naphthaldehyde imine) nickel was supported on SiO2. Prepylene oligomerization was performed by three types catalysts, bis(1-formyl-2-naphthol) Nickel (Ⅱ) , bis (2 - hydroxy -1 - naphthaldehyde imine)Ni(Ⅱ) and it’s heterogeneous with co-catalyst Et3Al2Cl3. The oligomeric products were analysised by GC. The properties of complexe/triphenylphosphine solution system were investigated by UV method, and the plausible formation mechanism of catalytic active site was deduced.
Keywords:l-formyl-2–naphthol; Supporting catalysts; Ni(Ⅱ) complex; Propylene oligomerization.