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특허 상세정보

Method for preparing a zirconium-cerium composite oxide

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C01F-017/00    C01G-025/02    B01J-023/00    B01J-023/10   
미국특허분류(USC) 423/593 ; 502/304 ; 502/349
출원번호 US-0331821 (1999-06-22)
우선권정보 JP0349679 (1996-12-27)
국제출원번호 PCT/JP97/04786 (1997-12-24)
§371/§102 date 19990622 (19990622)
국제공개번호 WO-9829341 (1998-07-09)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Darby & Darby
인용정보 피인용 횟수 : 38  인용 특허 : 5
초록

A zirconium--cerium composite oxide having excellent heat resistance and being capable of maintaining its large specific surface area even when used under high-temperature conditions, which composite oxide contains zirconium and cerium at a weight ratio of 51 to 95:49 to 5 in terms of zircomium oxide and ceric oxide, the composite oxide having a specific surface area of not smaller than 50 m.sup.2 /g, wherein said composite oxide is capable of maintaining a specific surface area of not smaller than 20 m.sup.2 /g even after heating at 1100.degree. C. for ...

대표
청구항

[ What is claimed is:] [1.] A method for preparing the zirconium--cerium composite oxide comprising zirconium and cerium at a weight ratio in a range of 51 to 95:49 to 5 in terms of zirconium oxide and ceric oxide, said composite oxide having a specific surface area of not smaller than 50 m.sup.2 /g, wherein said composite oxide is capable of maintaining a specific surface area of not smaller than 20 m.sup.2 /g even after heating at 1100.degree. C. for 6 hours, said method comprising the steps of:reacting under heating a mixture comprising zirconium hydr...

이 특허를 인용한 특허 피인용횟수: 38

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  24. Sato, Yasushi; Goto, Akira; Samura, Ken; Fuju, Akira; Kadowaki, Masataka. Hydrogen production apparatus, fuel cell system and operation method thereof. USP2015089112201.
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  32. Luo, Tian; Deeba, Michel. Oxygen storage catalyst with decreased ceria reduction temperature. USP2013098530372.
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  34. Akama, Hiroshi; Onodera, Hitoshi; Nishizawa, Toru; Hanaki, Yasunari; Morisaka, Hideaki. Particulate matter purifying material, filter catalyst for purifying particulate matter using particulate matter purifying material, and method of regenerating filter catalyst for purifying particulate matter. USP2015129222382.
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