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US 9,178,220 B2Granted
Catalyst assembly including an intermetallic compound of iridium and tungsten
AssigneeFord Global Technologies, LLC
InventorsPatrick Pietrasz, Jun Yang, Mark S. Sulek
Life of this patent
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Abstract
A catalyst assembly having a substrate including an intermetallic compound of W and Ir. The weight ratio of W to Ir is in a range between a first ratio and a second ratio. A catalyst includes at least one noble metal is supported on and contacts the substrate. The first ratio may be in the range of 48:52 and the second ratio may be in the range of 51:49.
Claims18
A catalyst assembly comprising:
- a substrate including a layer of an intermetallic W/Ir compound having a W/Ir weight ratio in a range of 48:52 and 51:49 with an XRD profile including a first 2Theta peak located between 33 and 41 and a second 2Theta peak located between 23 and 31;
- and
- a noble metal catalyst supported on and contacting the layer of the intermetallic W/Ir compound.
A catalyst assembly comprising:
- an intermetallic W/Ir compound layer having a W/Ir weight ratio in a range of 48:52 and 51:49 and an XRD profile including a first 2Theta peak located between 33 and 41 and a different second 2Theta peak located between 39 and 47, respectively, the first peak having an intensity of 42 to 50% of the second peak;
- and
- a noble metal catalyst supported on and contacting the intermetallic W/Ir compound layer.
A catalyst assembly comprising:
- an intermetallic W/Ir compound layer having a W/Ir weight ratio in a range of 48:52 and 51:49 and an XRD profile including a first 2Theta peak located between 23 and 31 and a second 2Theta peak located between 39 and 47, respectively, the first peak having an intensity of 31 to 39% relative to the second peak;
- and
- a catalyst supported on and contacting the intermetallic W/Ir compound layer.
Dependencies are inferred from the claim text.