The oxidation catalytic converter should substantially reduce emissions of hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NO), total oxygenates and certain aromatics. Ozone levels should also be reduced as a result of lower levels of HC and NO. Atmospheric lead should be reduced since low-lead gasoline must be used with the converter. There are, however, several adverse effects which could result from use of the catalytic converter: (1) recent tests indicate that these devices emit sulfates and sulfuric acid, both of which would have adverse health impacts; (2) if manganese is used to replace lead in gasoline, ambient manganese levels could increase; (3) the disposal of the spent catalytic materials (e.g. platinum and palladium) may cause additional environmental health problems; (4) mechanical failure of the converter will allow the automobile to emit as much pollution as the 1968 model.

  • Corporate Authors:

    National Aeronautics and Space Administration

    400 Maryland Avenue, SW
    Washington, DC  United States  20546

    Illinois Institute for Environmental Quality

    3300 South Federal
    Chicago, IL  United States  60616
  • Publication Date: 1975-5

Media Info

  • Pagination: 23 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00091614
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-574208 Patent App
  • Files: TRIS
  • Created Date: Aug 13 1976 12:00AM