Abstract: The oligomerization of 1-decenes was studied using aluminum chloride-isopropanol complex as catalyst, and high viscosity poly-alpha-olefins (PAO) were synthesized. The effects of reaction conditions, such as catalyst amount, molar ratio of isopropanol/AlCl3, reaction temperature, reaction time and various olefin feeds on the yield and property of PAO were investigated. The experimental results showed that under the conditions of an AlCl3 mole fraction of 4%, an isopropanol/AlCl3 molar ratio in the range of 0.3~0.7, reaction temperature in the range of 20~60℃ and a reaction time of 4 h, the yield of high viscosity PAO could be more than 90%, and the product having low condensation point and high viscosity index.

Key words: Poly-alpha-olefins, Oligomerization, Aluminium chloride-isopropanol complex, 1-Decene, high viscosity