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    • 9. 发明授权
    • Adsorbent catalyst
    • 吸附剂催化剂
    • US06818582B2
    • 2004-11-16
    • US09828898
    • 2001-04-10
    • Teuvo Maunula
    • Teuvo Maunula
    • B01J2100
    • B01D53/945B01D53/9422B01D2255/1021B01D2255/204B01D2255/2042B01D2255/2061B01D2255/2063B01D2255/2065B01D2255/20715B01J23/58B01J23/63F01N3/0814F01N3/0842F01N2510/06F01N2570/14Y02A50/2344Y02T10/22
    • An adsorbent catalyst for reducing the amounts of nitrogen oxides, hydrocarbons and carbon monoxide contained in exhaust or combustion gases, which catalyst adsorbs nitrogen oxides, when the exhaust or combustion gases contain in excess of oxygen, and liberates and reduces the adsorbed nitrogen oxides, when the gases contain oxygen in stoichiometric amounts or less, which adsorbent catalyst include a porous support material the surface area of which is large and which contains at least the following: a first catalytic metal, which is preferably Pt, a first NOx adsorbent, which preferably contains at least one of the following metals: Ba and Sr, a second NOx adsorbent, which preferably contains at least one of the following metals: La and Y, and a redox NOx adsorbent, which preferably contains at least one of the following metals: Ce, Zr, Ti, Nb, Mn, Pr, Nd, Sm, Eu and G. The invention also relates to methods for reducing the amounts of nitrogen oxides, hydrocarbons and carbon monoxide contained in exhaust or combustion gases.
    • 一种用于减少废气或燃烧气体中所含的氮氧化物,烃和一氧化碳的量的吸附剂催化剂,当废气或燃烧气体含有超过氧气时,催化剂吸附氮氧化物,并释放和减少吸附的氮氧化物,当 气体含有化学计量量或更少的氧,该吸附剂催化剂包括其表面积大且至少包含以下物质的多孔载体材料:优选Pt的第一催化金属,第一NOx吸附剂,其优选地 含有以下金属中的至少一种:Ba和Sr,第二NOx吸附剂,其优选含有以下金属中的至少一种:La和Y,以及优选含有以下金属中的至少一种的氧化还原NOx吸附剂: Ce,Zr,Ti,Nb,Mn,Pr,Nd,Sm,Eu和G.本发明还涉及减少氮氧化物,烃和一氧化碳 包含在排气或燃烧气体中。