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Title: Catalyst and method for reduction of nitrogen oxides

Abstract

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).

Inventors:
 [1]
  1. Los Alamos, NM
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Sponsoring Org.:
USDOE
OSTI Identifier:
943348
Patent Number(s):
7,413,720
Application Number:
11/385,140
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM) ALO
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Ott, Kevin C. Catalyst and method for reduction of nitrogen oxides. United States: N. p., 2008. Web.
Ott, Kevin C. Catalyst and method for reduction of nitrogen oxides. United States.
Ott, Kevin C. Tue . "Catalyst and method for reduction of nitrogen oxides". United States. https://www.osti.gov/servlets/purl/943348.
@article{osti_943348,
title = {Catalyst and method for reduction of nitrogen oxides},
author = {Ott, Kevin C},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {8}
}

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