Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1989-12-14
1992-05-26
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
B01J 800, C01B 2100
Patent
active
051165864
ABSTRACT:
A zeolite catalyst and a method for reduction of nitrogen oxides present in waste gas streams is described. The method includes mixing the waste gas containing nitrogen oxides with ammonia. At an elevated temperature, this mixture is passed over a zeolite catalyst. Preferably, the zeolite catalyst is in a monolithic or honeycomb form. The zeolite catalyst includes one or more of the following subgroup metals: copper, iron, molybdeum and cerium. The zeolite catalysts made in accordance with this invention show better conversion of nitrogen oxides and longer life than known catalysts.
REFERENCES:
patent: 4018706 (1977-04-01), Inoue et al.
Seiyama et al., "Catalytic Reduction of Nitric Oxide with Ammonia over Transition Metal Ion Exchanged Y Zeolites", Chemistry Letters, (1975), pp. 781-784.
Baacke Michael
Beand Reinhold
Engler Bernd
Kiss Akos
Kleine-Mollhoff Peter
Degussa - Aktiengesellschaft
Heller Gregory A.
LandOfFree
Method for the reduction of nitrogen oxides from waste gases usi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the reduction of nitrogen oxides from waste gases usi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the reduction of nitrogen oxides from waste gases usi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-418083