公开(公告)号：US5271913A

公开(公告)日：1993-12-21

申请号：US961116

申请日：1992-10-14

申请人： Kouza Iida ,  Yoshiaki Obayashi ,  Satoru Serizawa

发明人： Kouza Iida ,  Yoshiaki Obayashi ,  Satoru Serizawa

IPC分类号： B01D53/86 ,  B01J29/46 ,  B01D53/34

CPC分类号： B01J29/46 ,  B01D53/8628

摘要： A denitration catalyst for a high-temperature exhaust gas which is used to catalytically reduce and remove nitrogen oxides in the reaction temperature range of from 500.degree. to 700.degree. C. in the process of adding an ammonia gas to the exhaust gas containing the nitrogen oxides, the aforesaid catalyst being characterized by carrying 0.5 to 10% by weight of cerium in terms of Ce.sub.2 O.sub.3 or 0.5 to 5% by weight of iron in terms of Fe.sub.2 O.sub.3 on a high silica type zeolite in which the molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 is 20 or more.

摘要翻译： 在向含有氮氧化物的废气中加入氨气的过程中，用于高温废气的脱硝催化剂用于催化还原和除去在500〜700℃的反应温度范围内的氮氧化物 上述催化剂的特征在于，以SiO 2 / Al 2 O 3的摩尔比为20的高二氧化硅型沸石，以Ce2O3为0.5〜10重量％的铈或0.5〜5重量％的以Fe 2 O 3换算的铁 或者更多。