This content is not included in your SAE MOBILUS subscription, or you are not logged in.
The Conversion of SO2 Over Automotive Oxidation Catalysts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 1, 1975 by SAE International in United States
Annotation ability available
Noble metal oxidation catalysts have been shown to convert gasoline sulfur to automotive particulate sulfate emissions. A study was carried out in a laboratory bench scale reactor to evaluate the effect of vehicle operating conditions and catalyst type on the conversion of SO2 to SO3. The factors studied included catalyst temperature, exhaust gas O2 content and space velocity. The results are compared with data from a vehicular study designed to assess total sulfur emissions from catalyst-equipped cars.
This study indicates that control of exhaust sulfate emissions may be achieved through close control of the oxygen content of exhaust gas and that the choice of catalyst affects the degree of conversion of SO2 to SO3 and the amount of oxidized sulfur retained in the catalyst system.
CitationBeltzer, M., Campion, R., Harlan, J., and Hochhauser, A., "The Conversion of SO2 Over Automotive Oxidation Catalysts," SAE Technical Paper 750095, 1975, https://doi.org/10.4271/750095.
- Gross, G. P., “The Effect of Fuel and Vehicle Variables on Polynuclear Aromatic Hydrocarbon and Phenol Emissions,” SAE Paper 720210, January 10-14, 1972, Detroit, Michigan.
- Wigg E. E., “Fuel-Exhaust Compositional Relationships in Current and Advanced Emission Control Systems,” presented May 11, 1972, at Midyear Meeting of the American Petroleum Institute's Division of Refining, New York, New York.
- Beltzer M., Campion R. J., and Petersen W. L., “Measurement of Vehicle Particulate Emissions,” SAE Paper 740286, February 25-March 1, 1974, Detroit, Michigan.
- Pierson W. R., Hammerle R. H., and Kummer J. T., “Sulfuric Acid Aerosol Emissions from CatalystEquipped Engines,” SAE Paper 740287, ibid.
- Cole E. N., Attachment 4 to Statement of General Motors Corporation to the Senate Public Works Committee, November 5, 1973.
- Begeman, C. R., Jackson, M. W., and Nebel, G. J., “Sulfate Emissions from Catalyst-Equipped Vehicles,” SAE Paper 741060, October 21-25, 1974, Toronto, Canada.
- Berger, J. E., “Desulfurization of Gasoline,” Presentation Made to Joint Environmental Protection Agency-National Institute of Environmental Health Sciences Meeting, Durham, North Carolina, April, 1974.
- Bernstein L. S., Kearby K. K., Raman A. K. S. et al, “Application of Catalysts to Automotive NOx Emission Control,” SAE Paper 710014, January 11-15, 1971, Detroit, Michigan.
- Exxon Research and Engineering Company Testimony on Automotive Sulfate Emissions at EPA Hearings on Delay of the 1977 Carbon Monoxide and Hydrocarbon Standards, January 29, 1975.
- Exxon Research and Engineering Company Response to the March 8, 1974, Federal Register to Submit Data Regarding Automotive Sulfate Emissions, May 30, 1974.
- Sulfur Dioxide Pulsed Fluorescent Gas Analyzer Model 40, Thermo Electron Corporation, Waltham, Massachusetts.