[특허]Thermally durable low H.sub.2 S three-way catalysts

Thermally durable low H.sub.2 S three-way catalysts 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-023/00 B01J-023/40 B01J-023/42 B01J-021/04
출원번호	US-0004575 (1998-01-08)
발명자 / 주소	Andersen Paul J. Ballinger Todd H. Bennett Christopher J.
출원인 / 주소	Johnson Matthey Public Limited Company, GBX
대리인 / 주소	Ratner & Prestia
인용정보	피인용 횟수 : 35 인용 특허 : 14

초록 ▼

Improved platinum group three-way catalyst composition comprising (a) a high temperature catalyst support material, (b) a low temperature catalyst support material, (c) at least one platinum group metal, and (d) a metal additive effective for the suppression of hydrogen sulfide emissions, that is disposed in a separate layer either under or over a layer comprising the constituents (a), (b), and (c), or in the same layer as the constituents (a), (b), and (c). When the metal additive is disposed in the same layer as the constituents (a), (b), and (c), (d) the metal additive is disposed in a physical structure that is segregated from the remaining components in the layer.

대표청구항 ▼

[ We claim:] [1.] An improved platinum group three-way catalyst composition comprising:(a) a high temperature catalyst support material;(b) a low temperature catalyst support material;(c) at least one platinum group metal;said (a) (b) and (c) being disposed in a catalytic layer on a non-porous catalyst support substrate, rein the improvement comprises:(d) said composition also including an additive effective for the suppression of hydrogen sulfide emissions, said additive being disposed in a separate layer either under or over said catalytic layer or in the same layer as said catalytic layer, wherein when said additive is disposed in the same layer as said catalytic layer said additive is disposed in a physical structure that is segregated from the remaining components in said layer;said additive consisting essentially of a metal selected from the group consisting of Ba, Co, Fe, Mn, Ni, and oxides thereof.

이 특허에 인용된 특허 (14)

Wan Chung-Zong (Somerset NJ) Tauster Samuel J. (Englishtown NJ) Rabinowitz Harold N. (Upper Montclair NJ), Catalyst composition containing platinum and rhodium components.
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Wan Chung-Zong (Somerset NJ), Catalyst composition containing segregated platinum and rhodium components.
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Wan Chung-Zong (Somerset NJ) Dettling Joseph C. (Howell NJ), Catalyst compositions and methods of making the same.
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Joy ; III George C. (Arlington Heights IL) Lester George R. (Park Ridge IL) Marinangeli Richard E. (Arlington Heights IL), Catalyst for minimizing the H₂S emissions from automotive exhaust and method of its manufacture.
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Ohata Tomohisa (Himeji JPX) Tsuchitani Kazuo (Himeji JPX) Kitaguchi Shinya (Himeji JPX), Catalyst for purifying exhaust gas and method for production thereof.
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Setzer Herbert J. (Ellington CT), Catalyst for steam reforming.
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Ohata Tomohisa (Himeji JPX) Tsuchitani Kazuo (Himeji JPX) Shiraiashi Eiichi (Himeji JPX), Exhaust gas purifying catalyst suppressing the generation of hydrogen sulfide and method of making the catalyst.
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Tauster Samuel (Englishtown NJ) Murrell Lawrence (South Plainfield NJ) Penquite Charles R. (Holmdel NJ) Dettling Joseph C. (Howell NJ), Hydrogen sulfide suppressing catalyst system using an oxide of copper, manganese, nickel or iron.
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Tauster Samuel (Englishtown) Dettling Joseph C. (Howell) Mooney John J. (Wyckoff NJ), Hydrogen sulfide-suppressing catalyst system.
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Hu Zhicheng (Edison NJ) Wan Chung-Zong (Somerset NJ) Lui Yiu-Kwan (Parlin NJ) Dettling Joseph C. (Howell NJ), Layered catalyst composite.
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Bedford Raymond E. (Burton MI) Tsang Chih-Hao M. (Davison MI), Method of making a support containing an alumina-ceria washcoat for a noble metal catalyst.
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Wang Ren (Shanghai CNX) Wu Shanliang (Shanghai CNX) Zhang Zhigang (Shanghai CNX), Non-precious metal three way catalyst.
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Setzer Herbert J. (Ellington CT) Karavolis Sam (East Hampton CT) Bett John A. S. (Hamden CT), Steam reforming catalyst.
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Setzer Herbert J. (Ellington CT) Karavolis Sam (East Hampton CT) Bett John A. S. (Hamden CT), Steam reforming utilizing sulfur tolerant catalyst.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

연합인증

Thermally durable low H.sub.2 S three-way catalysts 원문보기