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Main Title Combustor study of the deactivation of a three way catalyst by lead and manganese /
Author Duncan, John. ; Braddock, J. N.
Other Authors
Author Title of a Work
Braddock, James N.
CORP Author Northrop Services, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Atmospheric Sciences Research Laboratory,
Year Published 1985
Report Number PB85-161222; EPA/600/D-85/006; EPA-68-02-2566
Stock Number PB85-161222
OCLC Number 739692666
Subjects Automobiles--Catalytic converters ; Gas-turbines--Combustion chambers
Additional Subjects Lead(Metal) ; Manganese ; Air pollution control equipment ; Nitrogen oxide(NO) ; Carbon monoxide ; Hydrocarbons ; Catalytic reactors(Exhaust systems) ; Misfueling
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD RPS EPA 600-D-85-006 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ELCD  EPA 600-D-85-006 NVFEL Library/Ann Arbor, MI 11/07/2011
NTIS  PB85-161222 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 5 p. : ill., charts ; 28 cm.
The activity and durability of a platinum-rhodium automotive three-way catalyst were investigated as a function of lead and manganese fuel levels using a pulse-flame combustor. Total hydrocarbons, carbon monoxide, and nitric oxide conversions and three-way (HC/CO/NO) conversion efficiency windows were determined for approximately 24,000 combustor-simulated miles. The window for 80% HC/CO/NO efficiency disappeared at approximately 9,000 miles, 13,500 miles, and 4,500 miles for 0.5 g of lead per gallon of fuel, 0.0625 g of manganese per gallon of fuel, and a combined manganese and lead misfueling study, respectively. The catalyst's nitric oxide reduction activity displayed the greatest sensitivity to catalytic poisoning with both lead and manganese fuels.
Cover title. "PB85-161222." "EPA/600/D-85/006." "January 1985."