Catalysts and methods for denitrization
    7.
    发明公开
    Catalysts and methods for denitrization 失效
    Katalysatoren und Verfahren zur Denitrierung。

    公开(公告)号:EP0614692A1

    公开(公告)日:1994-09-14

    申请号:EP94201396.2

    申请日:1991-05-02

    IPC分类号: B01D53/36 B01J29/20

    摘要: A catalyst for denitrizing of nitrogen oxides in the presence of a hydrocarbon as a reducing agent, which comprises:

    (A) a substituted zeolite having the general formula



            M¹ A M² B [(A10₂) x (Si0₂) Y ]·Z H₂0



    in which M¹ represents alkali metal, alkaline earth metal or hydrogen ion; M² is at least one metal ion selected from Ti⁴⁺, Zr⁴⁺ and Sn⁴⁺; n₁A +n₂B = X wherein n₁ is a valence of the ion M¹ and n₂ is a valence of ion M²; and Y/Z≧ 5 ; the M² ion being contained in an amount of 0.1-20% by weight based on the zeolite; and either
    (B) at least one metal or oxide of metal selected from Pd, Pt, Ru, Rh and Ag supported on the substituted zeolite in an amount of 0.1-10% by weight based on the zeolite, or
    (C) at least one oxide of metal selected from V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Nb, Mo and W in an amount of 0.1-20% by weight based on the zeolite.

    摘要翻译: 在烃作为还原剂存在下脱氮氮氧化物的催化剂,其包括:(A)具有通式M 1 AM 2 B [(A 102)x(SiO 2)Y]的取代沸石, .ZH 2 O其中M 1表示碱金属,碱土金属或氢离子; M 2是选自Ti 4+,Zr 4+和Sn 4+中的至少一种金属离子。 n1A + n2B = X其中n1是离子M 1的化合价,n2是离子M 2的化合价; 和Y / Z> = 5; 相对于沸石,M 2离子的含量为0.1-20重量%; 和(B)至少一种选自负载在取代的沸石上的Pd,Pt,Ru,Rh和Ag的金属或金属的金属,其量为0.1-10重量%,或者(C)至少 选自V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Nb,Mo和W的金属的一种氧化物的量为0.1-20重量%。