Method of minimizing iron contamination during catalyst regenera

Details Method of minimizing iron contamination during catalyst regenera Method of minimizing iron contamination during catalyst regenera

1997-09-08

2000-03-07

Dunn, Thomas

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 38, 502 49, 502 50, 502 53, 502 55, 502 56, B01J 2034

Patent

active

060340193

ABSTRACT:
The present invention is directed toward improved processes for the regeneration of noble metal-containing catalysts wherein iron contamination of the catalyst during regeneration is significantly diminished. It has been found that maintenance of any iron present in contact with the catalyst in the oxidized state (e.g., as Fe.sub.2 O.sub.3 or Fe.sub.3 O.sub.4) during contact of the catalyst with a source of halogen in the regeneration haliding step results in a marked decrease in the degree of catalyst contamination by iron species.

REFERENCES:
patent: 3206413 (1965-09-01), Leopard
patent: 4444895 (1984-04-01), Fung et al.
patent: 4769128 (1988-09-01), Boyle

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