Metal oxide catalytic compositions

Details Metal oxide catalytic compositions Metal oxide catalytic compositions

B - Operations, Transporting

01

D

252/45, 252/53.C

B01D 53/34 (2006.01) B01D 53/94 (2006.01) B01J 23/00 (2006.01) B01J 23/40 (2006.01) B01J 23/56 (2006.01) B01J 23/58 (2006.01) B01J 23/64 (2006.01) B01J 23/70 (2006.01) B01J 23/89 (2006.01)

Patent

CA 1066686

ABSTRACT OF THE DISCLOSURE Catalytic compounds having the general formula ABO3 and a perovskite crystal structure, wherein about from 1% to 20% of the B site cations are ions of a platinum metal, the remainder of the B site cations are ions of metals having atomic radii between about from 0.4 and 1.4 Angstroms, and the A site cations consists essentially of ions of a metal having an atomic number of 11 to 51, 57 to 71, or 89 to 103, useful for the promotion of gaseous oxidation and reduction reactions, particularly in the cleanup of exhaust gases of internal com- bustion engines.

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