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    • 1. 发明申请
    • CATALYST FOR SELECTIVE OXIDATION OF NH3 TO N2 AND METHOD FOR PREPARING THE SAME
    • 用于将NH 3选择性氧化成N2的催化剂及其制备方法
    • WO2011062390A2
    • 2011-05-26
    • PCT/KR2010007810
    • 2010-11-19
    • SK INNOVATION CO LTDLEE SEONG HOLEE WOO JINCHEON YOUNG EUNOH SEUNG HOONKIM SUNG HWANJUNG HONG SEOKKIM YONG WOOGOH GI HO
    • LEE SEONG HOLEE WOO JINCHEON YOUNG EUNOH SEUNG HOONKIM SUNG HWANJUNG HONG SEOKKIM YONG WOOGOH GI HO
    • B01J23/89B01D53/58B01J23/889B01J37/02
    • B01J29/04B01D53/9436B01D2255/1023B01D2255/2073B01D2255/20753B01D2255/2092B01J23/889Y10S502/52719
    • The present invention provides a catalyst which can convert ammonia contained in exhaust gas from an engine of a vehicle equipped with a Urea-SCR(Urea-Selective Catalytic Reduction) system, to nitrogen(N2), and a method for preparating the same. Particularly, when a urea solution is injected to exhaust gas from a vehicle equipped with a Urea-SCR system, the injected urea is decomposed to ammonia(NH3) at the temperature of exhaust gas, and then the ammonia is fed to a SCR catalyst system together with nitrogen oxides (NOx) contained in exhaust gas, wherein the NOx are later converted to N2. The present invention relates to a catalyst which can convert ammonia which is failed to participate in a conversion reaction of NOx to N2 and slipped out of the SCR catalyst, to nitrogen via a SCO(Selective Catalytic Oxidation) reaction, before the ammonia is released to the air. The present invention relates to a catalyst for conversion of ammonia to nitrogen via selective oxidation of ammonia, characterized in that a carrier is coated to a support, and then palladium and either of nickel or manganese are supported on the resulted carrier; and to a method for preparing the same. In addition, the present inveniotn relates to a method for reducing ammonia by using the catalyst as a catalyst for selective oxidation of ammonia.
    • 本发明提供一种催化剂及其制备方法,所述催化剂能够将从装备有尿素SCR(尿素选择性催化还原)系统的车辆的发动机排出的废气中的氨转化为氮气(N 2)。 特别是,当尿素溶液被喷射到装备有尿素SCR系统的车辆的排气中时,喷射的尿素在排气温度下分解成氨(NH 3),然后将氨供给到SCR催化剂系统 与排气中所含的氮氧化物(NOx)一起,其中NOx随后转化为N2。 本发明涉及一种催化剂,其能够在将氨释放到氨气之前将未参与NOx的转化反应的氨转化成N2并从SCR催化剂中逸出,经由SCO(选择性催化氧化)反应转化为氮气 空气。 本发明涉及一种通过氨的选择性氧化将氨转化为氮的催化剂,其特征在于将载体涂覆到载体上,然后将钯和镍或锰中的任一种负载在所得载体上; 并涉及其制备方法。 另外,本发明涉及通过使用该催化剂作为用于选择性氧化氨的催化剂来减少氨的方法。