Record Display for the EPA National Library Catalog


Main Title Assessment of automotive sulfate emission control technology /
Author Bachman, K. C. ; Holt, E. L. ; Leppard, W. R. ; Wigg., E. E.
Other Authors
Author Title of a Work
Bachman, K. C.
CORP Author Exxon Research and Engineering Co., Linden, N.J.;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div.
Publisher Environmental Protection Agency, Office of Air Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division ; For sale by the Natural Technical Information Service,
Year Published 1976
Report Number EPA/460-3-76-017; EPA-68-03-0497
Stock Number PB-257 705
OCLC Number 03826662
ISBN pbk.
Subjects Automobiles--Motors--Exhaust gas ; Air quality management
Additional Subjects Sulfates ; Air pollution control ; Sulfur dioxide ; Exhaust emissions ; Automobiles ; Sorbents ; Assessments ; Calcium oxides ; Sulfur ; Absorbents ; Diesel fuels ; Catalytic converter ; Laboratory equipment ; Gas analysis ; Magnesium ; Aluminum oxide ; Chemical reactions ; Reduction ; Particles ; Activated carbon ; Catalytic reactors(Exhaust systems) ; Activated charcoal
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-460/3-76-017 Research Triangle Park Library/RTP, NC 03/21/2003
ELBD ARCHIVE EPA 460-3-76-017 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-257 705 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 202 pages : illustrations ; 28 cm.
This report includes a literature search to determine possible reactions involving sulfur in automotive exhaust systems, an assessment of the effect of various operating parameters (i.e. exhaust oxygen level) on the level of sulfate emissions, and a feasibility study on the use of sorbents as traps to eliminate sulfate from the exhaust gas before release to the atmosphere. It was discovered in the study that exhaust oxygen level and catalyst age were major variables affecting level of sulfate emissions. Other variables, such as noble metal composition, noble metal loading, catalyst temperature and residence time of the exhaust gas over the catalyst had little or no significant effect on sulfate emissions. It was also discovered that only calcium based materials (such as calcium oxide) removed sulfate efficiently enough with little physical degradation during laboratory testing of potential sorbents. Vehicle tests using the most promising sorbents as traps showed high sulfate removal but with unacceptably high exhaust back pressures.
Contract 68-03-0497. "May 1976." "EPA/460-3-76-017." Includes bibliographical references.