Production and use of a catalyst carrier

Details Production and use of a catalyst carrier Production and use of a catalyst carrier

B - Operations, Transporting

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252/37, 252/56

B01J 37/08 (2006.01) B01D 53/86 (2006.01) B01J 23/63 (2006.01) B01J 23/86 (2006.01) B01J 37/02 (2006.01)

Patent

CA 1142502

PRODUCTION AND USE OF A CATALYST CARRIER ABSTRACT OF THE DISCLOSURE The invention relates to the production of a cata- lyst carrier. To this end, a chrome/aluminum-steel struc- ture is annealed over a period of 2 to 50 hours, at tempe- ratures within the range 800 to 1100°C with admission of air, and a cerium dioxide layer is applied to the surface of the annealed structure. More specifically a structure made up of an alloy containing 10 to 30 weight % Cr; 3 to 8 weight % Al; up to 5 weight % Mn, Ti, Si, C, P and S, the balance being Fe; is annealed, the annealed structure is impregnated with a suspension of cerium oxide hydrate in an aqueous ammonium nitrate solution; dried and anne- aled for 5 to 20 hours at temperatures within the range 600 to 1000°C. The invention also relates to the use of the cata- lyst carrier in the production of a catalyst for the de- contamination of exhaust gases of internal combustion engines or production facilities. To this end the cata- lyst carrier is coated with 0.05 to 0.5 weight % of at least one noble metal by impregnating it with an aqueous solution of at least one noble metal compound, drying it at 40 to 80°C and heating it at 250 to 400°C.

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