STUDY OF NH SUB 3 FORMATION AND ITS CONTROL IN THE NOX CATALYST SYSTEM

NH sub 3 formation was investigated as a function of such feed gas boundary conditions as CO concentration, CO/O sub 2 ratio, space velocity, linear velocity and catalyst bed temperature. Both fresh and aged NOX catalysts were used. Logitudinal patterns of NH sub 3 formation in monolithic NOX catalyst were also determined. Several ideas were tested to reduce NH sub 3 formation in the NOX catalyst through control of feed H sub 2, O sub 2, CO and HC concentrations. Finally, the possibility of extending the optimum A/F range of a NOX catalyst toward leaner A/F ratios by the introduction of methane ahead of the NOX catalyst is discussed. /GMRL/

• Supplemental Notes:
  • From Inter-Industry Emission Control Program 2, SAE SP-403.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • KURODA, H
  • NAKAJIMA, Y
  • Saito, T
  • Oguri, T
  • NAGAI, T
• Publication Date: 1976-2

Media Info

• Pagination: p. 41-53
• Serial:
  • Publication of: Society of Automotive Engineers
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Air quality management; Ammonia; Carbon monoxide; Catalysts; Chemical reactions; Flow; Nitric oxide; Nitrogen oxides; Testing equipment
• Uncontrolled Terms: Flow rate
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00145292
• Record Type: Publication
• Report/Paper Numbers: SAE 760200
• Files: TRIS
• Created Date: May 31 1977 12:00AM