High temperature treatment of silica support for chromium...

Details High temperature treatment of silica support for chromium... High temperature treatment of silica support for chromium...

B - Operations, Transporting

01

J

252/103, 402/418

B01J 31/02 (2006.01) B01J 27/00 (2006.01) B01J 31/12 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1128033

Abstract of the Disclosure A support suitable for supporting chromium to produce a catalyst capable of giving high flow olefin polymers for such applications as inter- tion molding and the like requiring a narrow molecular weight distribution is produced by treating the support at an elevated temperature with either (1) CO, (2) a bromine component, or (3) an oxygen-containing sulfur compo- nent. thereafter, anhydrous chromium can be added, for instance, by means of a hydrocarbon solution of a soluble chromium compound, and the resulting composition activated in air to produce a catalyst. The bromine treated silica is also suitable for use as reinforcing agent in rubber or plastics and as a support for a chromatographic column.

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