Regeneration of phosphorus poisoned automotive catalysts

Details Regeneration of phosphorus poisoned automotive catalysts Regeneration of phosphorus poisoned automotive catalysts

1984-10-17

1985-10-22

Konopka, P. E.

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

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

4232135, 502 27, 502515, 502517, B01J 2396

Patent

active

045489114

ABSTRACT:
Regeneration of a phosphorus poisoned automotive exhaust catalyst is accomplished in a preferred embodiment by washing the catalyst or soaking it to the point of incipient wetness with an aqueous solution of an acid such as HCl, HNO.sub.3 or oxalic acid and subsequent heating of the wetted catalyst in air or other oxygen-containing gas.

REFERENCES:
patent: 2006221 (1935-06-01), Ridler
patent: 2867497 (1959-01-01), Houdry et al.
patent: 4152301 (1979-05-01), Summers et al.

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