Denitration catalyst
    2.
    发明授权
    Denitration catalyst 失效
    脱硝催化剂

    公开(公告)号:US5658546A

    公开(公告)日:1997-08-19

    申请号:US522536

    申请日:1995-09-01

    摘要: There is provided a denitration catalyst excellent in denitration activity and durability in a high temperature region, for catalytically reducing NOx in an exhaust gas using a reducing agent such as ammonia. This denitration catalyst is (1) one containing a titanium-tungsten oxide obtained by coprecipitating a soluble titanium compound and a soluble tungsten compound from an aqueous medium under the conditions of a temperature of 60.degree. C. or less and a pH of the range of 5 to 8, and drying and calcining to coprecipitate formed; or (2) one comprising said titanium-tungsten oxide (component A), and an oxide of at least one element (component B) selected from the group consisting of cerium (Ce), lanthanum (La), praseodymium (Pr), neodymium (Nd), nickel (Ni) and tin (Sn).

    摘要翻译: 提供了一种脱硝催化剂,其在高温区域的脱硝活性和耐久性优异,使用氨等还原剂催化还原废气中的NOx。 该脱硝催化剂为(1)在温度60℃以下,pH范围为0.1以下的条件下,将含有钛 - 氧化钨的水溶性钛化合物和可溶性钨化合物从水性介质中共沉淀而成的 5〜8,干燥煅烧成共沉淀物; 或者(2)包含所述钛 - 氧化钨(A成分)和选自由铈(Ce),镧(La),镨(Pr),钕(镨),镨 (Nd),镍(Ni)和锡(Sn)。