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Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation

Patent ·
OSTI ID:1043901
 [1];  [2];  [3];  [4]
  1. Basking Ridge, NJ
  2. Princeton, NJ
  3. Hamilton, NJ
  4. Ringoes, NJ
+ Show Author Affiliations
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.
Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-02NT41218
Assignee:
BASF Corporation (Florham Park, NJ)
Patent Number(s):
8,173,574
Application Number:
11/857,896
OSTI ID:
1043901
Country of Publication:
United States
Language:
English

References (4)

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
Selective reduction of NO on Ag/Al2O3 catalysts prepared from boehmite needles journal October 1998

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY