Thermally stable, highly active perovskite catalysts for...

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B - Operations, Transporting

01

J

252/56, 252/63

B01J 23/10 (2006.01) B01J 23/00 (2006.01) B01J 23/02 (2006.01) B01J 23/34 (2006.01) B01J 23/83 (2006.01) C01G 23/00 (2006.01) C01G 45/00 (2006.01) C01G 49/00 (2006.01) C01G 51/00 (2006.01) C01G 53/00 (2006.01)

Patent

CA 2281123

Thermostable metal oxide catalysts of the general formula AB1-xMxo3-5 having a perovskite crystal structure and the process of making the same. A and B are cations forming refractory oxides. M is a relatively non-volatile active cation and acts as a doping of site B in an amount of about 0.01 to about 0.30. Cations A, B and M are so chosen as to assure a deficiency in oxygen represented by .delta. of at least 0.02. The catalysts according to the present invention show good catalytic properties even after aging at temperatures above 1300 °C.

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