C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/116, 252/87
C10G 35/06 (2006.01) B01J 23/96 (2006.01) B01J 37/22 (2006.01) B01J 37/24 (2006.01) C10G 11/02 (2006.01) C10G 35/085 (2006.01) C10G 35/09 (2006.01) C10G 47/00 (2006.01)
Patent
CA 1037401
ABSTRACT OF THE DISCLOSURE Supported iridium-containing hydrocarbon conversion catalysts which are at least partially deactivated due to the deposition of carbonaceous residues thereon during contact with hydrocarbons are regenerated by (1) contacting the catalyst with oxygen to burn at least a portion of the carbonaceous residues from the catalyst, (2) contacting the carbonaceous residue-depleted catalyst with an elemental helogen-containing gas at a temperature of less than about 850°F., (3) contacting the treated catalyst with hydrogen at elevated temperatures to reduce a substantial portion of the iridium present in the catalyst to its metallic form, and (4) contacting the catalyst from step (3) with an elemental halogen-containing gas at a temperature of at least about 850°F. Steps (3) and (4) may be repeated, in sequence, at least one additional time to redisperse the iridium catalyst component to a highly active, high surface area state.
207143
Kmak Walter S.
Yates David J.c.
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