Rare-earth-manganese oxidation catalysts and process of producin

Details Rare-earth-manganese oxidation catalysts and process of producin Rare-earth-manganese oxidation catalysts and process of producin

1980-02-04

1981-09-22

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

423245, B01J 2310, B01J 2334

Patent

active

042909236

ABSTRACT:
Alkali metal delta manganese dioxide hydrate, which is obtained as a by-product in the industrial oxidation of organics by KMnO.sub.4 is subjected to ion exchange reaction with rare earth ions of the ceria subgroup (viz. cerium, lanthanum, etc.). By employing favorable temperature and pH conditions, a reaction product can be produced containing as little as 0.03 moles of alkalii metal per mole of manganese, and up to one mole of ceria rare earth per six moles of manganese. The separated product is prepared for catalytic use in the form of dried porous pellets. The resulting oxidation catalyst has high efficiency, long life, and optimum activity at reasonable temperatures. The catalyst can be used advantageously for applications such as the oxidation and deodorization of exhaust gases from paint drying ovens.

REFERENCES:
patent: 1345323 (1920-06-01), Frazer et al.
patent: 2433932 (1948-01-01), Stosick
patent: 3700605 (1972-10-01), Dodman et al.
patent: 3838069 (1974-09-01), Miyazaki et al.
patent: 3865752 (1975-02-01), Remeika et al.

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