Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation
Abstract
Catalysts, systems and methods are described to reduce NO.sub.x emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.
- Inventors:
-
- Ringoes, NJ
- Princeton, NJ
- Basking Ridge, NJ
- Hamilton, NJ
- Troy, MI
- Shelby Township, MI
- Issue Date:
- Research Org.:
- General Motors Corporation
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1018204
- Patent Number(s):
- 7943548
- Application Number:
- 11/533,593
- Assignee:
- BASF Corporation (Florham Park, NJ)
- 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:
- FC26-02NT41218
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Castellano, Christopher R, Moini, Ahmad, Koermer, Gerald S, Furbeck, Howard, Schmieg, Steven J, and Blint, Richard J. Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation. United States: N. p., 2011.
Web.
Castellano, Christopher R, Moini, Ahmad, Koermer, Gerald S, Furbeck, Howard, Schmieg, Steven J, & Blint, Richard J. Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation. United States.
Castellano, Christopher R, Moini, Ahmad, Koermer, Gerald S, Furbeck, Howard, Schmieg, Steven J, and Blint, Richard J. Tue .
"Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation". United States. https://www.osti.gov/servlets/purl/1018204.
@article{osti_1018204,
title = {Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation},
author = {Castellano, Christopher R and Moini, Ahmad and Koermer, Gerald S and Furbeck, Howard and Schmieg, Steven J and Blint, Richard J},
abstractNote = {Catalysts, systems and methods are described to reduce NO.sub.x emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {5}
}
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Works referenced in this record:
Selective reduction of NO on Ag/Al2O3 catalysts prepared from boehmite needles
journal, October 1998
- Takagi, K.; Kobayashi, T.; Ohkita, H.
- Catalysis Today, Vol. 45, Issue 1-4
Catalytic reduction system of NOx in exhaust gases from diesel engines with secondary fuel injection
journal, August 1998
- Nakatsuji, T.; Yasukawa, R.; Tabata, K.
- Applied Catalysis B: Environmental, Vol. 17, Issue 4