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    • 6. 发明公开
    • PM 연소 촉매 및 필터
    • 颗粒物氧化催化剂和过滤器
    • KR1020070096119A
    • 2007-10-02
    • KR1020057023875
    • 2005-07-25
    • 도와 홀딩스 가부시키가이샤
    • 스다히사시야노다쿠야
    • B01J23/34B01D53/94B01J23/78F01N3/10
    • B01D53/944B01D2279/30B01J23/002B01J23/34B01J23/83B01J35/002B01J2523/00F01N3/10B01J2523/24B01J2523/3706B01J2523/72B01J2523/842
    • A catalyst suitable for use in particulate filters (DPF) capable of trapping particulate matter (PM) contained in diesel engine exhaust gas, in particular, a combustion catalyst for particulate matter contained in diesel engine exhaust gas which comprises a perovskite composite oxide having an NO adsorption region in the range of 200 to 450°C. This combustion catalyst enables low-temperature combustion of PM, and due to use of no precious metal, is inexpensive, and due to no evaporation of constituent materials at exhaust gas temperature, excels in durability. The above perovskite composite oxide has the structural formula RTO 3, substantially not containing Na, wherein R is at least one member selected from the group consisting of La, Sr, Ba, Ca and Li while T is at least one member selected from the group consisting of Mn, Fe, Co, Cu, Zn, Ga, Zr, Mo, Mg, Al and Si.
    • 适用于能够捕集柴油发动机废气中所含的颗粒物质(PM)的微粒过滤器(DPF)的催化剂,特别是包含在柴油机废气中的颗粒物质的燃烧催化剂,其包含具有NO的钙钛矿复合氧化物 吸附区域在200〜450℃的范围内。 该燃烧催化剂使得PM的低温燃烧,并且由于不使用贵金属,因此便宜,并且由于废气温度下的构成材料没有蒸发,耐久性优异。 上述钙钛矿复合氧化物具有结构式RTO 3,基本上不含有Na,其中R是选自La,Sr,Ba,Ca和Li中的至少一种,而T是选自以下的至少一种: 由Mn,Fe,Co,Cu,Zn,Ga,Zr,Mo,Mg,Al和Si组成。