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.
Claims21
A catalyst for selective oxidation of ammonia, wherein palladium and either of nickel or manganese are supported on a carrier coated over a support.
A method for preparing a catalyst for selective oxidation of ammonia, comprising:
- (a) coating carrier slurry over a support, and drying and firing the coated support;
- and
- (b) impregnating the carrier-coated support from the above step (a) with a mixed aqueous solution wherein palladium or a palladium compound and another component selected from nickel, a nickel compound, manganese and a manganese compound are dissolved, and then drying and firing the resulted product.
Dependencies are inferred from the claim text.