| abstract |
In the process for producing a catalyst support by annealing a shaped body made of chromium-aluminum steel for 2-50 hours at 800-1100 ° C. with the entry of air and then applying a surface layer made of cerium dioxide, a shaped body made of an alloy with 10-30% by weight Cr is annealed , 3 - 8 wt% Al, 0 - 5 wt% Mn, Ti, Si, C, P, S, rest Fe, wets it with a suspension of cerium oxide hydrate in an aqueous solution of ammonium nitrate, dries and glows for 5 - 20 hours 600 - 1000 ° C. The invention further relates to the use of the catalyst support obtained in this way for the production of a catalyst for the purification of exhaust gases from internal combustion engines and industrial plants, the catalyst support being coated with 0.05 to 0.5% by weight of at least one noble metal by treating it with the aqueous solution impregnates at least one precious metal compound, dries at 40-80 ° C and heats to 250-400 ° C. |