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US 2023/0356204 A1Published application
Bismut containing dieseloxidation catalyst
AssigneeUmicore AG & Co. KG
InventorsAnke WOERZ, Andrea DE TONI
Life of this patent
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Abstract
The present invention relates to a catalyst comprising a support substrate having a length L extending between the ends a and b, and four material zones A, B, C and D, wherein material zone B comprises bismuth.
Claims18
A catalyst comprising a carrier substrate having a length L extending between the ends a and b, and four material zones A, B, C and D, wherein
- material zone A extends from end a over a portion of length L and comprises platinum and no palladium, palladium and no platinum or platinum and palladium;
- material zone B extends from end b over a portion of length L and comprises platinum and bismuth;
- with LA + LB = L, where LA is the length of material zone A and LB is the length of material zone B;
- material zone C extends from end a over a portion of length L and comprises platinum and no palladium, palladium and no platinum or platinum and palladium;
- material zone D extends from end b over a portion of length L and comprises platinum and no palladium, palladium and no platinum or platinum and palladium;
- with LC + LD = L, where LC is the length of material zone C and LD is the length of material zone D;
- and wherein material zones C and D are arranged above material zones A and B.
4 more elements
Dependencies are inferred from the claim text.