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

Gardner, Timothy J; Lott, Stephen E; Lockwood, Steven J; McLaughlin, Linda I

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

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:871948

Gardner, Timothy J ^[1]; Lott, Stephen E ^[2]; Lockwood, Steven J ^[1]; McLaughlin, Linda I ^[1]

Albuquerque, NM
Edgewood, NM

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.

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Research Organization:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

DOE Contract Number:: AC04-76

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)

NO reduction by hydrocarbons in an oxidizing atmosphere over transition metal-zirconium mixed oxides Bethke, Kathleen A.; Alt, David; Kung, Mayfair C. Catalysis Letters, Vol. 25, Issue 1-2 https://doi.org/10.1007/BF00815413	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 Sato, Shinya; Hirabayashi, Hiroshi; Yahiro, Hidenori Catalysis Letters, Vol. 12, Issue 1-3 https://doi.org/10.1007/BF00767201	journal	January 1992
The adsorption of nitric oxide on copper oxides*1 Gandhi, H. Journal of Catalysis, Vol. 28, Issue 1 https://doi.org/10.1016/0021-9517(73)90172-3	journal	January 1973
Development of Lean Burn Catalyst Takami, Akihide; Takemoto, Takasi; Iwakuni, Hideharu International Congress & Exposition, SAE Technical Paper Series https://doi.org/10.4271/950746	conference	February 1995
Selective catalytic reduction of no by ethene in excess oxygen over platinum ion-exchanged MFI zeolites Shin, H. Catalysis Today, Vol. 26, Issue 1 https://doi.org/10.1016/0920-5861(95)00125-Y	journal	August 1995
Selective catalytic reduction of nitric oxide by hydrocarbons Amiridis, Michael D.; Zhang, Tiejun; Farrauto, Robert J. Applied Catalysis B: Environmental, Vol. 10, Issue 1-3 https://doi.org/10.1016/0926-3373(96)00031-8	journal	September 1996
Catalytic NOx Reduction in Net Oxidizing Exhaust Gas Held, Wolfgang; König, Axel; Richter, Thomas International Congress & Exposition, SAE Technical Paper Series https://doi.org/10.4271/900496	conference	February 1990
The effect of promoters on Pt/Al2O3 catalysts for the reduction of NO by C3H6 under lean-burn conditions Burch, R.; Watling, T. C. Applied Catalysis B: Environmental, Vol. 11, Issue 2 https://doi.org/10.1016/S0926-3373(96)00043-4	journal	February 1997
The role of NO2 in the reduction of NO by hydrocarbon over Cu-ZrO2 and Cu-ZSM-5 catalysts Bethke, K. A.; Li, C.; Kung, M. C. Catalysis Letters, Vol. 31, Issue 2-3 https://doi.org/10.1007/BF00808841	journal	June 1995
Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine Bögner, W.; Krämer, M.; Krutzsch, B. Applied Catalysis B: Environmental, Vol. 7, Issue 1-2 https://doi.org/10.1016/0926-3373(95)00035-6	journal	December 1995
Performance of platinum-group metal catalysts for the selective reduction of nitrogen oxides by hydrocarbons Obuchi, Akira; Ohi, Akihiko; Nakamura, Masato Applied Catalysis B: Environmental, Vol. 2, Issue 1 https://doi.org/10.1016/0926-3373(93)80027-B	journal	March 1993
The new concept 3-way catalyst for automotive lean-burn engine: NOx storage and reduction catalyst Takahashi, Naoki; Shinjoh, Hirofumi; Iijima, Tomoko Catalysis Today, Vol. 27, Issue 1-2 https://doi.org/10.1016/0920-5861(95)00173-5	journal	January 1996

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Related Subjects

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/

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

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References (12)

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