Procédé de production d'oléfines alpha légères de pureté améliorée par oligomérisation, de l'éthylène.

摘要

A method for producing light alpha olefins having improved purity by ethylene oligomerisation, wherein ethylene is contacted with a catalyst prepared by mixing a zirconium compound with an organic compound selected from the class of acetals and ketals, and with a chlorinated or brominated aluminium hydrocarbyl compound, and the raw oligomerisation effluent is first treated with an amine then subjected to evaporation to recover the alpha olefins in the evaporated fraction.