Patent ID: 8138285

Claim:
A method of forming a supported catalyst system comprising: providing an inorganic support material; contacting the inorganic support material with a support solvent to form a support solution; contacting the support solution with a fluorine containing compound represented by the formula AlF p X 3-p B q to impregnate the fluorine containing compound within the inorganic support material and form an intermediate, wherein X is selected from Cl, Br and OH − , B is H 2 O, p is selected from 1 to 3 and q is selected from 0 to 6; drying the intermediate to remove the solvent therefrom and heating the intermediate at a temperature of at least about 300° C. to form an impregnated support; and contacting the impregnated support with a transition metal compound to form a supported catalyst system, wherein the transition metal compound is represented by the formula [L] m M[A] n ; wherein L is a ligand, A is a leaving group, M is a transition metal and m and n are such that a total ligand valency corresponds to the transition metal valency.