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Method for selective catalytic reduction of nitrogen oxides

Patent ·
OSTI ID:982789
 [1];  [2];  [2]
  1. Broomfield, CO
  2. Albuquerque, NM
+ Show Author Affiliations
A method for catalytically reducing nitrogen oxide compounds (NO.sub.x, defined as nitric oxide, NO, +nitrogen dioxide, NO.sub.2) in a gas by a material comprising a base metal consisting essentially of CuO and Mn, and oxides of Mn, on an activated metal hydrous metal oxide support, such as HMO:Si. A promoter, such as tungsten oxide or molybdenum oxide, can be added and has been shown to increase conversion efficiency. This method provides good conversion of NO.sub.x to N.sub.2, good selectivity, good durability, resistance to SO.sub.2 aging and low toxicity compared with methods utilizing vanadia-based catalysts.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
6,855,303
Application Number:
10/601,255
OSTI ID:
982789
Country of Publication:
United States
Language:
English

References (4)

Alumina supported manganese oxides for the low-temperature selective catalytic reduction of nitric oxide with ammonia journal December 1992
Low-Temperature Selective Catalytic Reduction (SCR) of NO with NH3 by Using Mn, Cr, and Cu Oxides Supported on Hombikat TiO2 journal July 2001
Deactivation by SO2 of MnOx/Al2O3 catalysts used for the selective catalytic reduction of NO with NH3 at low temperatures journal May 1998
Chemical and mechanistic aspects of the selective catalytic reduction of NO by ammonia over oxide catalysts: A review journal September 1998

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY