Method for the reduction of nitrogen oxides using iron impregnat

Details Method for the reduction of nitrogen oxides using iron impregnat Method for the reduction of nitrogen oxides using iron impregnat

1994-07-07

1996-05-28

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232391, C01B 2100

Patent

active

055208959

ABSTRACT:
There is provided a process for the treatment of exhaust gas, which process uses a specially prepared catalyst composition, for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising an intermediate pore size zeolite catalyst that has been treated with a water soluble iron salt or salt precursor in a way effective to maximize iron dispersion. The intermediate pore size zeolite of this invention preferably has a silica:alumina molar ratio of between about 20 and about 1000. The catalyst of this invention typically comprises a silica, titania, or zirconia binder, preferably a binder including a high molecular weight, hydroxyl functional silicone resin. The catalyst of this invention is preferably formed, e.g., extruded, and then simultaneously calcined and hydrothermally treated.

REFERENCES:
patent: 4631267 (1985-03-01), Lachman et al.
patent: 4778665 (1988-10-01), Krishnamurthy et al.
patent: 4867954 (1989-09-01), Staniulis et al.
patent: 4961917 (1990-10-01), Byrne
patent: 4973399 (1990-11-01), Green et al.
patent: 5024981 (1991-06-01), Speronello et al.
patent: 5173278 (1992-12-01), Marler et al.
patent: 5254322 (1993-10-01), Bhore et al.
patent: 5271913 (1993-12-01), Iida et al.
patent: 5310714 (1994-05-01), Grasseli et al.

Affiliated with

Also associated with

Rating

Method for the reduction of nitrogen oxides using iron impregnat 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 using iron impregnat, 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 using iron impregnat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-784777