Catalyst for selective oxidation of NH3 to N2 and method for preparing the same
AssigneeSK Innovation Co., Ltd.
InventorsSeong Ho Lee, Woo Jin Lee, Young Eun Cheon, Seung Hoon Oh, Sung Hwan Kim, Hong Seok Jung, Yong Woo Kim, Gi Ho Goh
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Abstract
Disclosed is a catalyst which can convert ammonia contained in exhaust gas from an engine of a vehicle equipped with a Urea-SCR (Urea-Selective Catalytic Reduction) system, to nitrogen, and a method for preparating the same. The catalyst can convert ammonia which is failed to participate in a conversion reaction of NOx to N2 and slipped out of the SCR catalyst, to nitrogen via a SCO (Selective Catalytic Oxidation) reaction, before the ammonia is released to the air.
Claims11
A method for preparing a catalyst for selective oxidation of ammonia, comprising:
- (a) coating a carrier over a support, and drying and firing the carrier-coated support;
- and
- (b) impregnating the carrier-coated support from step (a) with a mixed aqueous solution comprising palladium or a palladium compound and another component selected from a group consisting of nickel, a nickel compound, manganese and a manganese compound and drying and firing the resulting product.
Dependencies are inferred from the claim text.