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US 10,518,253 B2Granted
Catalyst and method for preparing catalyst
AssigneesHyundai Motor Company, Kia Motors Corporation, Postech Academy-Industry Foundation
InventorsSuk Bong Hong, Donghui Jo, Taekyung Ryu, Gi Tae Park, In-Sik Nam, Pyung Soon Kim, Chang Hwan Kim
Life of this patent
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Abstract
A catalyst includes LTA zeolite including copper ions, wherein a Si/Al ratio of the LTA zeolite is 2 to 50. The catalyst is coated on a honeycomb carrier or a filter. The catalyst removes NOx from a reaction gas at 100° C. or above. The catalyst has an NOx conversion rate of 80% at 450° C. or above.
Claims5
A catalyst comprising linde type A (LTA) zeolite ion-exchanged by copper ions and a copper type of SSZ-13 zeolite,
- wherein a silicon/aluminum (Si/Al) ratio of the LTA zeolite is 3 to 25, and
- wherein a mixing ratio of the LTA zeolite to the copper-type SSZ-13 zeolite is 1:3 to 3:1.
Dependencies are inferred from the claim text.