CATALYST SYSTEM FOR ETHYLENE OLIGOMERIZATION AND METHOD FOR PRODUCING ETHYLENE OLIGOMERIZATION USING THE SAME

The present disclosure relates to a catalyst system for ethylene oligomerization and a method for producing ethylene oligomerization using the same and more particularly, to a catalyst system for ethylene oligomerization including a transition metal or transition metal precursor with a new structure, a ligand with a backbone structure expressed by the following Chemical Formula 1 or Chemical Formula 2, and a co-catalyst for providing an ethylene oligomer and a method for producing ethylene oligomerization using the same. [Chemical Formula 1] R1-OC(═O)-Y1-C(═O)OR2 Herein, R1, R2 are each independently hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, or substituted heterohydrocarbyl, and Y1 represents a group connecting CO(═O). [Chemical Formula 2] R1-O-Y2-O-R2 Herein, R1, R2 are each independently hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, or substituted heterohydrocarbyl, and Y2 represents a group connecting O and is a linear, branched, or cyclic alkyl group having 3 or more carbon atoms, or hetero hydrocarbyl, or substituted heterohydrocarbyl. The catalyst system of the present disclosure has an excellent catalytic activity and in the distribution of the produced α-olefins, C8″-C18″ α-olefins are highly distributed.