Catalysts containing active metallic copper

Details Catalysts containing active metallic copper Catalysts containing active metallic copper

1976-10-28

1978-12-12

Shine, W. J.

Compositions

X-ray or neutron shield

252463, 252468, 252476, 423656, B01J 2104, B01J 2306, B01J 2372, B01J 2326

Patent

active

041295234

ABSTRACT:
A catalyst containing metallic copper, especially a low temperature shift catalyst containing also zinc oxide, is made from a corresponding catalyst precursor by reduction in two stages. In the first stage a steam and/or CO.sub.2 -diluted reducing gas is used and in the second a more strongly reducing gas mixture such as ammonia synthesis gas or even 100% hydrogen. The resulting catalyst is substantially more active than one reduced according to previous one-stage steam-reduction practice and similar to catalyst made by the less convenient dry-reduction using nitrogen or natural gas as diluent.

REFERENCES:
patent: 3388972 (1966-06-01), Reitmeier et al.
patent: 3390102 (1968-06-01), Reitmeier
patent: 3514261 (1970-05-01), Bridger et al.
patent: 3546140 (1970-12-01), Gutmann et al.

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