Titanium impregnated silica-chromium catalysts

Details Titanium impregnated silica-chromium catalysts Titanium impregnated silica-chromium catalysts

C - Chemistry, Metallurgy

08

F

252/104, 402/631

C08F 4/22 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1163621

Abstract of the Disclosure In accordance with one embodiment of this invention, a silica hydrogel is prepared and dried in the presence of a pore preserving agent after which a titanium compound is anhydrously incorporated there- with. In accordance with the second embodiment of this invention, a silica hydrogel or a silica xerogel is impregnated with an aqueous organic acid solution of a substituted or unsubstituted titanium acetyl- acetonate. The invention allows the use of conventional drying to produce a silica exhibiting characteristics associated with azeotrope dried titanium-silica for use as a support for chromium catalysts. The resulting catalysts are broadly applicable in the polymerization of olefins and are of particular utility in the slurry polymerization of olefins, particularly predominantly ethylene monomer.

418411

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