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Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process

Patent ·
OSTI ID:871948
 [1];  [2];  [1];  [1]
  1. Albuquerque, NM
  2. Edgewood, NM
+ Show Author Affiliations
A catalytic material of activated hydrous metal oxide doped with platinum, palladium, or a combination of these, and optionally containing an alkali or alkaline earth metal, that is effective for NO.sub.X reduction in an oxidizing exhaust stream from a combustion process is disclosed. A device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, the device having a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention is also provided.
Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
Assignee:
Low Emissions Technologies Research and Development Partnership (Dearborn, MI)
Patent Number(s):
US 5830421
OSTI ID:
871948
Country of Publication:
United States
Language:
English

References (12)

Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine journal December 1995
The role of NO2 in the reduction of NO by hydrocarbon over Cu-ZrO2 and Cu-ZSM-5 catalysts journal June 1995
Selective catalytic reduction of no by ethene in excess oxygen over platinum ion-exchanged MFI zeolites journal August 1995
The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst journal January 1996
Development of Lean Burn Catalyst conference February 1995
The effect of promoters on Pt/Al2O3 catalysts for the reduction of NO by C3H6 under lean-burn conditions journal February 1997
NO reduction by hydrocarbons in an oxidizing atmosphere over transition metal-zirconium mixed oxides journal January 1994
Catalytic NOx Reduction in Net Oxidizing Exhaust Gas conference February 1990
Performance of platinum-group metal catalysts for the selective reduction of nitrogen oxides by hydrocarbons journal March 1993
The adsorption of nitric oxide on copper oxides*1 journal January 1973
Selective catalytic reduction of nitric oxide by hydrocarbons journal September 1996
Iron ion-exchanged zeolite: the most active catalyst at 473 K for selective reduction of nitrogen monoxide by ethene in oxidizing atmosphere journal January 1992

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Related Subjects

/423/422/502/
activated
alkali
alkaline
alkaline earth
automotive
catalytic
catalytic material
catalytic reduction
coated
combination
combustion
combustion process
containing
device
disclosed
doped
earth
earth metal
effective
exhaust
exhaust stream
hydrous
hydrous metal
material
metal
metal doped
metal oxide
nitrogen
nitrogen oxide
nitrogen oxides
noble-metal
optionally
optionally containing
oxide
oxide doped
oxides
oxidizing
palladium
particularly
platinum
process
provided
reduction
stream
substrate
substrate coated