Matsushita Electric Industrial Co., Ltd. (Osaka JPX 03)
인용정보
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14인용 특허 :
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초록▼
For the preparation of a catalytic composite for purifying exhaust gases, first, at least one perov-skite-type compound oxide of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination thereof, is supported together with cerium dioxide and alumina sol on a hea
For the preparation of a catalytic composite for purifying exhaust gases, first, at least one perov-skite-type compound oxide of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination thereof, is supported together with cerium dioxide and alumina sol on a heat resistant carrier made of an inorganic oxide selected from the group consisting of cordierite and mullite, and then iron and palladium are further supported together thereon. As a result, a catalytic composite having a high degree of oxidation activity at low temperatures and also having excellent heat resistance can be obtained.
대표청구항▼
A catalytic composite for purifying exhaust gases, comprising: a heat resistant carrier made of an inorganic oxide selected from the group consisting of cordierite and mullite; at least one compound of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination th
A catalytic composite for purifying exhaust gases, comprising: a heat resistant carrier made of an inorganic oxide selected from the group consisting of cordierite and mullite; at least one compound of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination thereof; cerium dioxide; alumina sol; iron; and palladium, the compound RMO3, the cerium dioxide, the alumina sol, the iron and the palladium all being supported on the heat resistant carrier. A method for preparing a catalytic composite for purifying exhaust gases, comprising the steps of: (a) supporting at least one compound of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination thereof, cerium dioxide, and alumina sol on a heat resistant carrier made of an inorganic oxide selected from the group consisting of cordierite or mullite; and (b) supporting iron and palladium on the carrier obtained in the step (a).
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이 특허를 인용한 특허 (14)
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