Enriched rhodium catalyst and method for making same

Details Enriched rhodium catalyst and method for making same Enriched rhodium catalyst and method for making same

1979-02-26

1979-12-18

Shine, W. J.

Compositions

X-ray or neutron shield

4232135, 423239, B01J 2342, B01J 2346

Patent

active

041794133

ABSTRACT:
The specification teaches a method of enriching a catalyst system in which both platinum and rhodium are present. The enrichment increases the amount of rhodium which is actively available for use as a catalyst. The enrichment is brought about by thermally aging the catalyst system in an oxidizing atmosphere by heating it to a temperature in a range from 650.degree. C. to 875.degree. C. for a period of at least two hours. A thermal aging at a temperature of about 800.degree. C. for a period of 4 to 8 hours is preferred.

REFERENCES:
patent: 3840471 (1974-10-01), Acres
patent: 3951860 (1976-04-01), Acres et al.
patent: 4006103 (1977-02-01), Meguerian et al.

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