질소산화물 흡장-환원 촉매, 이의 제조 방법 및 이를 포함하는 질소산화물의 정화 시스템
    3.
    发明公开
    질소산화물 흡장-환원 촉매, 이의 제조 방법 및 이를 포함하는 질소산화물의 정화 시스템 有权
    NO x储存和还原催化剂,其制备方法和包含其的NOX去除系统

    公开(公告)号:KR1020120021644A

    公开(公告)日:2012-03-09

    申请号:KR1020100077506

    申请日:2010-08-11

    Abstract: PURPOSE: A nitrogen oxide absorbing-reducing catalyst, a method for manufacturing the same, and a system for purifying nitrogen oxide including the same are provided to improve the activity of the catalyst at low temperatures. CONSTITUTION: A nitrogen oxide absorbing-reducing catalyst includes a support, a nitrogen oxide absorbing element, and one or more noble metals. The support includes alkali metal and aluminum or alkali earth metal and aluminum. The nitrogen oxide absorbing element is alkali metal, alkali earth metal, or rear earth elements. The noble metals are selected from a group including Pt, Pd, Ru, Ag, Au, and Rh. A method for manufacturing a nitrogen oxide absorbing-reducing catalyst includes the following: the hydroxide of the alkali metal or the hydroxide of the alkali earth metal are dissolved with aluminum nitrate in an aqueous solution; the solution is stirred, dried, and fired to obtain the support; the support is impregnated with the alkali metal, the alkali earth metal, or rear earth element and one or more noble metals; and the impregnated product is dried and fired.

    Abstract translation: 目的:提供氮氧化物吸收还原催化剂及其制造方法以及包含该氮氧化物吸收还原催化剂的氮氧化物的净化系统,以提高催化剂在低温下的活性。 构成:氮氧化物吸收还原催化剂包括载体,氮氧化物吸收元素和一种或多种贵金属。 载体包括碱金属和铝或碱土金属和铝。 氮氧化物吸收元件是碱金属,碱土金属或后土元素。 贵金属选自Pt,Pd,Ru,Ag,Au和Rh。 制造氮氧化物吸收还原催化剂的方法包括:碱金属的氢氧化物或碱土金属的氢氧化物用硝酸铝溶解在水溶液中; 将溶液搅拌,干燥并烧制得到载体; 载体用碱金属,碱土金属或后土元素和一种或多种贵金属浸渍; 将浸渍的产品干燥并烧制。

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