THE FORMATION AND CONTROL OF SULFURIC ACID EMISSIONS OVER AUTOMOTIVE CATALYSTS

In order to find a way to minimize sulfuric acid formation while maintaining high HC and CO conversion, the effect of temperature, air-fuel ratio, space velocity and catalyst metal composition on SO2 conversion was studied. Both pelleted and monolithic catalysts were investigated using an engine dynamometer and a small diameter dilution tunnel. The effect of engine operating conditions on SO2 conversion was clarified and an advantageous shape for the catalytic converter was found. Thirteen pelleted and four monolithic catalysts were tested with rhodium showing a remarkable effect on HC conversion selectivity. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Tokura, N
  • Saito, T
• Publication Date: 1977

Media Info

• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Catalysts; Dynamometers; Fuel air mixtures; Hydrocarbons; Pollutants; Sulfuric acid; Temperature
• Uncontrolled Terms: Air fuel ratio
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00158393
• Record Type: Publication
• Report/Paper Numbers: SAE 770198
• Files: TRIS
• Created Date: Dec 8 1977 12:00AM