Titanium impregnated silica-chromium catalysts

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

C - Chemistry, Metallurgy

08

F

252/104, 402/431

C08F 4/78 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1154741

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 therewith, 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 acetylacetonate. 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 ? and are of particular utility in the slurry polymerization of olefins, particularly predominantly ethylene monomer.

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