CPC B01J 23/755 (2013.01) [B01D 46/0027 (2013.01); B01D 53/945 (2013.01); B01J 21/04 (2013.01); B01J 23/10 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 23/464 (2013.01); B01J 35/0006 (2013.01); B01J 35/0066 (2013.01); B01J 35/04 (2013.01); F01N 3/035 (2013.01); F01N 3/101 (2013.01); F01N 3/2825 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20753 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9022 (2013.01); F01N 2330/06 (2013.01); F01N 2370/02 (2013.01); F01N 2510/06 (2013.01)] | 10 Claims |
1. A method for treating exhaust gas in a vehicle, comprising:
flowing the exhaust gas through a first emissions treatment device, the first emissions treatment device comprising a first three-way catalyst, the first three-way catalyst comprising at least one precious metal in a washcoat; and
flowing the exhaust gas through a second emissions treatment device, the second emissions treatment device comprising a cerium-based support material and a transition metal catalyst that catalyzes decomposition of ammonia in the exhaust gas;
wherein the transition metal catalyst comprises nickel and copper; and
nickel in the transition metal catalyst is included in a monatomic layer loaded on the cerium-based support material.
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