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특허 상세정보

Process of activation of a palladium catalyst system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01J-027/053   
미국특허분류(USC) 502/217; 502/223; 502/339
출원번호 US-0613176 (2009-11-05)
등록번호 US7989385 (2011-07-18)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 0  인용 특허 : 21
초록

Improved processes for activating a catalyst system used for the reduction of nitrogen oxides are provided. In one embodiment, the catalyst system is activated by passing an activation gas stream having an amount of each of oxygen, water vapor, nitrogen oxides, and hydrogen over the catalyst system and increasing a temperature of the catalyst system to a temperature of at least 180° C. at a heating rate of from 1-20°/min. Use of activation processes described herein leads to a catalyst system with superior NOx reduction capabilities.

대표
청구항

The invention claimed is: 1. A process for activating a catalyst system comprising:providing a catalyst system comprising zirconia support particles, palladium and a pre-sulfated zirconia binder; andactivating the catalyst system by passing an activation gas stream comprising an amount of each of oxygen, water vapor, nitrogen oxides, and hydrogen over the catalyst system and increasing a temperature of the catalyst system to a temperature of at least 180° C. at a heating rate of from 1-20°/min;wherein a concentration of the nitrogen oxides is from 10-100...

이 특허에 인용된 특허 (21)

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