Process for regenerating catalysts
AssigneeShell Oil Company
InventorsPeter Joseph Shukis, James Donald Carruthers, Vincent Joseph Lostaglio
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Abstract
Provided are high activity catalysts based upon gamma alumina containing substrates impregnated with one or more catalytically active metals, which catalysts in addition contain a nanocrystalline phase of alumina of a crystalline size at the surface of less than 25 Å. Also provided are processes for preparing such high activity catalysts and various uses thereof.
Claims7
A process for regenerating a spent catalyst composition comprising a particulate porous support comprising gamma alumina, amorphous alumina, and one or more catalytically active metals, the process comprising the steps of:
- (1) treating the spent catalyst to remove carbonaceous deposits;
- (2) wetting the treated support by contact with a chelating agent in a carrier liquid;
- (3) aging the wetted support while wet;
- (4) drying the aged support at a temperature and under conditions to substantially volatilize the carrier liquid;
- and
- (5) calcining the dried support.
Dependencies are inferred from the claim text.