Catalyst for reduction of nitrogen oxides
A Selective Catalytic Reduction (SCR) catalyst was prepared by slurry coating ZSM-5 zeolite onto a cordierite monolith, then subliming an iron salt onto the zeolite, calcining the monolith, and then dipping the monolith either into an aqueous solution of manganese nitrate and cerium nitrate and then calcining, or by similar treatment with separate solutions of manganese nitrate and cerium nitrate. The supported catalyst containing iron, manganese, and cerium showed 80 percent conversion at 113 degrees Celsius of a feed gas containing nitrogen oxides having 4 parts NO to one part NO.sub.2, about one equivalent ammonia, and excess oxygen; conversion improved to 94 percent at 147 degrees Celsius. N.sub.2O was not detected (detection limit: 0.6 percent N.sub.2O).
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Number(s):
- 7,691,769
- Application Number:
- 12/080,958
- OSTI ID:
- 1176212
- Country of Publication:
- United States
- Language:
- English
Low-Temperature SCR of NO with NH3 over USY-Supported Manganese Oxide-Based Catalysts
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journal | April 2003 |
Selective catalytic reduction of NOx using zeolitic catalysts for high temperature applications
|
journal | March 1992 |
A superior catalyst for low-temperature NO reduction with NH3
|
journal | March 2003 |
Low temperature selective catalytic reduction (SCR) of NO with NH3 over Fe–Mn based catalysts
|
journal | February 2002 |
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