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    Catalyst for catalytic reduction of nitrogen oxides
    5.
    发明授权
    Catalyst for catalytic reduction of nitrogen oxides 失效
    用于催化还原氮氧化物的催化剂

    公开(公告)号：US5733837A

    公开(公告)日：1998-03-31

    申请号：US628855

    申请日：1996-04-05

    申请人： Tadao Nakatsuji ,  Hiromitsu Shimizu ,  Ritsu Yasukawa ,  Katsumi Miyamoto ,  Hiroshi Tsuchida

    发明人： Tadao Nakatsuji ,  Hiromitsu Shimizu ,  Ritsu Yasukawa ,  Katsumi Miyamoto ,  Hiroshi Tsuchida

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J29/06 ,  B01J23/10

    CPC分类号： B01D53/8628 ,  B01D53/9418 ,  B01J29/061 ,  B01D2251/208 ,  B01D2255/2065

    摘要： A catalyst for catalytic reduction of nitrogen oxides using a hydrocarbon and/or a oxygen-containing organic compound as a reducing agent is disclosed, which comprises a cerium oxide supported on a solid acid carrier. Also, a catalyst for catalytic reduction of nitrogen oxides using a hydrocarbon and/or an oxygen-containing organic compound as a reducing agent is disclosed, which comprises: (a) at least one element selected from the elements of Group Ib, Group IIa, Group IIb, Group IIIa, Group IIIb, Group IVa, Group IVb, Group Va, Group VIa, Group VIIa, and Group VIII in the Periodic Table (hereinafter referred to as the elements belonging to group (a)); and (b) a cerium oxide, supported on a solid acid carrier.

    摘要翻译： 公开了一种使用烃和/或含氧有机化合物作为还原剂催化还原氮氧化物的催化剂，其包含负载在固体酸性载体上的氧化铈。 另外，公开了使用烃和/或含氧有机化合物作为还原剂催化还原氮氧化物的催化剂，其包括：（a）选自元素Ib，IIa族， 第IIb族，第Ⅲa族，第IIIb族，第Ⅳa族，第Ⅳb族，Ⅴa族，Ⅵa族，Ⅶa族和Ⅷ族在元素周期表中（以下简称属于（a）组的元素）。 和（b）负载在固体酸性载体上的氧化铈。

    Catalyst and a method for denitrizing nitrogen oxides contained in waste gases
    9.
    发明授权
    Catalyst and a method for denitrizing nitrogen oxides contained in waste gases 失效
    催化剂和废气中所含的氮氧化物脱氮的方法

    公开(公告)号：US4859439A

    公开(公告)日：1989-08-22

    申请号：US102639

    申请日：1987-09-30

    申请人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kuzuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

    发明人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kuzuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

    IPC分类号： B01D53/86 ,  B01J21/06 ,  B01J23/00 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J35/10

    CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J23/22 ,  B01J35/1038 ,  B01J35/1061 ,  B01J35/1066 ,  B01J35/1071 ,  B01J35/108

    摘要： A catalyst for denitrizing nitrogen oxides contained in waste gases, which comprises:(a) titanium, and(b) at least one base metal selected from the group consisting of V, W, Mo, Mn, Cu, Fe, Cr, Co, Ni, Zn and Sn, the catalyst containing titanium and the base metals in amounts of at least about 50% by weight in terms of oxides based on the catalyst, and titanium in amounts of about 80-99% by weight in terms of oxides and the base metals in amounts of about 20-1% by weight in terms of oxides, respectively, based on the total weight in terms of oxides of titanium and the base metals, and the catalyst having micropores of about 50-75000 .ANG. in radius in amounts of about 0.25-0.45 ml/g, and micropores of about 50-100 .ANG. in radius in amounts of about 10-40% by volume and micropores of about 500-60000 .ANG. in radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of about 50-75000 .ANG. in radius, in the presence of a reducing gas at elevated temperatures.The catalyst retains a higher denitrizing activity over a long period time than the conventional catalysts, and is substantially free from deactivation with arsenic or arsenic compounds contained in waste gases.

    摘要翻译： 1.一种用于脱氮废气中含有的氮氧化物的催化剂，其包括：（a）钛，和（b）选自V，W，Mo，Mn，Cu，Fe，Cr，Co， Ni，Zn和Sn中的至少约50重量％的钛和贱金属的催化剂，以氧化物为基准，以催化剂为基准，钛的量为约80-99重量％，以氧化物计， 基于以氧化物为基准的总重量计，以氧化物计为约20-1重量％的贱金属，以钛和贱金属的氧化物计的总重量，以及具有约50-75000安培的微孔的催化剂半径 约0.25-0.45ml / g的量的微孔和约50-100的微孔，其量为约10-40体积％，微孔为约500-60000，半径为不小于约10％ 体积，分别基于微孔的总体积约50-75000安培半径，在存在o f在升高的温度下还原气体。 与常规催化剂相比，催化剂在长时间内保持较高的脱氨活性，并且与废气中所含的砷或砷化合物基本上没有失活。