skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

Inventors:
 [1];  [2];  [1];  [1]
  1. Albuquerque, NM
  2. Edgewood, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
871948
Patent Number(s):
5830421
Assignee:
Low Emissions Technologies Research and Development Partnership (Dearborn, MI)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
material; catalytic; reduction; nitrogen; oxide; exhaust; stream; combustion; process; activated; hydrous; metal; doped; platinum; palladium; combination; optionally; containing; alkali; alkaline; earth; effective; oxidizing; disclosed; device; oxides; particularly; automotive; substrate; coated; noble-metal; provided; nitrogen oxide; combustion process; exhaust stream; nitrogen oxides; metal oxide; alkaline earth; earth metal; catalytic material; oxide doped; substrate coated; hydrous metal; catalytic reduction; optionally containing; metal doped; /423/422/502/

Citation Formats

Gardner, Timothy J, Lott, Stephen E, Lockwood, Steven J, and McLaughlin, Linda I. Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process. United States: N. p., 1998. Web.
Gardner, Timothy J, Lott, Stephen E, Lockwood, Steven J, & McLaughlin, Linda I. Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process. United States.
Gardner, Timothy J, Lott, Stephen E, Lockwood, Steven J, and McLaughlin, Linda I. Thu . "Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process". United States. https://www.osti.gov/servlets/purl/871948.
@article{osti_871948,
title = {Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process},
author = {Gardner, Timothy J and Lott, Stephen E and Lockwood, Steven J and McLaughlin, Linda I},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

NO reduction by hydrocarbons in an oxidizing atmosphere over transition metal-zirconium mixed oxides
journal, January 1994


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


The adsorption of nitric oxide on copper oxides*1
journal, January 1973


Development of Lean Burn Catalyst
conference, February 1995


Selective catalytic reduction of nitric oxide by hydrocarbons
journal, September 1996


Catalytic NOx Reduction in Net Oxidizing Exhaust Gas
conference, February 1990


The effect of promoters on Pt/Al2O3 catalysts for the reduction of NO by C3H6 under lean-burn conditions
journal, February 1997


The role of NO2 in the reduction of NO by hydrocarbon over Cu-ZrO2 and Cu-ZSM-5 catalysts
journal, June 1995


Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine
journal, December 1995


Performance of platinum-group metal catalysts for the selective reduction of nitrogen oxides by hydrocarbons
journal, March 1993


The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst
journal, January 1996