To provide a catalyst which can efficiently make a nitrogen oxide harmless while inhibiting the consumption of a precious metal, as well as a method for manufacturing a catalyst.
This catalyst has a rhodium (Rh) atomic layer 1 laminated on the surface of a carrier 2. The carrier 2 is constituted of a material in which the distance between atoms in the Rh atomic layer 1 laminated on the surface of the carrier 2 is equal to or larger than the distance between atoms of Rh in bulk. On the surface of the Rh atomic layer 1 where the distance between atoms is equal to or larger than the distance between atoms of Rh in bulk, the probability of dissociative adsorption of nitrogen monoxide is high. Therefore, the nitrogen oxide (NOx) can be easily reduced and as such, the catalyst can make NOx harmless efficiently. When the number of the Rh atomic layers 1 to be laminated on the surface of the carrier 2 is lessened, the consumption of Rh can be cut more and besides, the capability of the catalyst to make NOx harmless can be increased more.
NAKANISHI HIROSHI
KISHI HIROSHI
| JP2002210375A | 2002-07-30 | |||
| JP2002210369A | 2002-07-30 | |||
| JP2009082776A | 2009-04-23 | |||
| JP2008007422A | 2008-01-17 | |||
| JP2009202127A | 2009-09-10 |
Hideno Kono
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