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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Catalytic trap with potassium component and method of using the same

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/94    F01N-003/28    B01J-023/40    B01J-023/58    B01J-037/02   
미국특허분류(USC) 422/180; 422/171; 422/177; 502/304; 502/339; 502/340; 502/439
출원번호 US-0643457 (2000-08-22)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Richard A. Negin
인용정보 피인용 횟수 : 30  인용 특허 : 82
초록
▼

A catalytic trap (10, 110) effective for conversion of NOx in an exhaust gas stream is inert to high-temperature reaction with basic oxygenated compounds of lithium, sodium or potassium. The catalytic trap may be substantially free of silica components and may include a catalytic trap material (20, 120) which contains a refractory metal oxide support, e.g., alumina, having dispersed thereon a catalytic component, such as a platinum group metal catalytic component, and a NOx sorbent comprised of one or more of the basic oxygenated compounds. The catalytic...

대표
청구항
▼

1. A catalytic trap for conversion of NOx in an exhaust gas stream which is periodically alternated between (1) lean and (2) stoichiometric or rich conditions, the catalytic trap comprising:(a) a catalytic trap material which comprises the following components: (i) a refractory metal oxide support having dispersed thereon a catalytic component effective for promoting the reduction of NOx under stoichiometric or rich conditions of the exhaust stream, and (ii) a NOx sorbent effective for adsorbing NOx under lean conditions of the exhaust gas stream and des...

이 특허에 인용된 특허 (82)

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