Rare earth-manganese oxidation catalysts and process of...

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

B - Operations, Transporting

01

J

252/56

B01J 23/34 (2006.01)

Patent

CA 1131198

RARE EARTH-MANGANESE OXIDATION CATALYSTS AND PROCESS OF PRODUCING ABSTRACT Alkali metal delta manganese dioxide hydrate, which is obtained as a by-product in the industrial oxidation of organics by KMnO4 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 alkali 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 advanta- geously for applications such as the oxidation and deodoriza- tion of exhaust gases from paint drying ovens. - 1 -

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