发明授权
US5993764A Nitrogen oxide-reducing catalyst and process for reducing nitrogen
oxides in exhaust gas
失效
氮氧化物还原催化剂和还原废气中的氮氧化物的方法
- 专利标题： Nitrogen oxide-reducing catalyst and process for reducing nitrogen oxides in exhaust gas
- 专利标题（中）： 氮氧化物还原催化剂和还原废气中的氮氧化物的方法
-
申请号： US765151申请日： 1996-12-11
-
公开(公告)号： US5993764A公开(公告)日： 1999-11-30
- 发明人: Takeshi Tabata , Mikako Kokitsu , Osamu Okada , Hirofumi Ohtsuka , Giuseppe Bellussi , Luigina Maria Flora Sabatino
- 申请人： Takeshi Tabata , Mikako Kokitsu , Osamu Okada , Hirofumi Ohtsuka , Giuseppe Bellussi , Luigina Maria Flora Sabatino
- 申请人地址： JPX Osaka ITX San Donato Milanese
- 专利权人： Osaka Gas Company Limited,Eniricerche S.p.A.
- 当前专利权人： Osaka Gas Company Limited,Eniricerche S.p.A.
- 当前专利权人地址： JPX Osaka ITX San Donato Milanese
- 优先权： JPX7-116412 19950417; JPX7-119114 19950419
- 主分类号： B01D53/86
- IPC分类号： B01D53/86 ; B01D53/94 ; B01J29/70 ; B01J29/76 ; B01D53/56
摘要：
The present invention provides a NOx reducing catalyst comprising BEA zeolite which is ion-exchanged with Co to have a Co/Al ratio between 0.2 and 0.6 and is loaded with at least one metal selected from among Ca, Sr, Ba, La, Mn, Ag, In, and Ni. The present invention also provides a NOx reduction process comprising the use of the catalyst of the present invention. The catalyst of this invention provides high activity, high NOx reduction selectivity and durability at low temperature in an actual exhaust gas containing water vapor and other substances disturbing catalytic activity even at low temperature and at low NOx and hydrocarbon concentration.
公开/授权文献
- US5287733A Apparatus for receiving liquid treatment samples for disposal 公开/授权日：1994-02-22
信息查询
IPC分类:
