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Title: 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 on a particulate alumina support, the silver having a diameter of less than about 20 nm. Methods of manufacturing catalysts are described in which ionic silver is impregnated on particulate hydroxylated alumina particles.

Inventors:
 [1];  [2];  [3];  [4]
  1. Basking Ridge, NJ
  2. Princeton, NJ
  3. Hamilton, NJ
  4. Ringoes, NJ
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1043901
Patent Number(s):
8173574
Application Number:
11/857,896
Assignee:
BASF Corporation (Florham Park, NJ)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
FC26-02NT41218
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Koermer, Gerald S, Moini, Ahmad, Furbeck, Howard, and Castellano, Christopher R. Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation. United States: N. p., 2012. Web.
Koermer, Gerald S, Moini, Ahmad, Furbeck, Howard, & Castellano, Christopher R. Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation. United States.
Koermer, Gerald S, Moini, Ahmad, Furbeck, Howard, and Castellano, Christopher R. Tue . "Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation". United States. https://www.osti.gov/servlets/purl/1043901.
@article{osti_1043901,
title = {Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation},
author = {Koermer, Gerald S and Moini, Ahmad and Furbeck, Howard and Castellano, Christopher R},
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 on a particulate alumina support, the silver having a diameter of less than about 20 nm. Methods of manufacturing catalysts are described in which ionic silver is impregnated on particulate hydroxylated alumina particles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
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


Catalytic reduction system of NOx in exhaust gases from diesel engines with secondary fuel injection
journal, August 1998


Low temperature selective oxidation of ammonia to nitrogen on silver-based catalysts
journal, January 2003


Alumina: Catalyst and Support. I. Alumina, its Intrinsic Acidity and Catalytic Activity 1
journal, May 1960