|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B01J-021/04 B01J-023/10 B01J-023/40|
|미국특허분류(USC)||502/303 ; 502/302 ; 502/324 ; 502/326|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 15 인용 특허 : 6|
A catalyst, which is capable of controlling not only HC, CO and NOx, but also H2S emission from the tail pipe of catalytic converter automobiles, is made of platinum-group metals promoted by rare earth oxides and containing a metal ferrite. The ferrite is present in an H2S gettering amount and in an amount up to about 20 weight % of the catalyst. The catalyst comprises an alumina support and is applied as a washcoat to a substrate, such as a honeycomb monolith made from ceramic or metal.
Automotive exhaust catalyst comprising a support carrying a catalytically effective amount of at least one platinum group metal and an H2S gettering amount of a metal ferrite having the formula MFe2O4, where M is Co, Ni, Cu, Zn, Mn, or Fe.