Catalyst regeneration procedure

Details Catalyst regeneration procedure Catalyst regeneration procedure

1981-01-27

1982-11-16

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208140, 252441, 252442, B01J 2396, B01J 2346, C10G 3509

Patent

active

043594000

ABSTRACT:
Supported multi-metallic platinum-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 hydrogen at an elevated temperature to convert a substantial portion of the non-platinum component present in the catalyst to its metallic form, (3) contacting the reduced catalyst with dry hydrogen chloride in the absence of oxygen, (4) treatment of the hydrogen chloride treated catalyst with chlorine, and (5) reduction of the chlorine treated catalyst with a reducing agent, such as hydrogen.

REFERENCES:
patent: 2785138 (1957-03-01), Milliken, Jr.
patent: 3939061 (1976-02-01), Paynter et al.

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