This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Implications of Precious Metal Catalysts with Leaded Fuels
Annotation ability available
Sector:
Language:
English
Abstract
The potential for catalysts, to operate with leaded fuel, was evaluated by screening catalysts under a variety of steady state and cyclic conditions with 0.4 g/l leaded fuel. The influence of precious metal loading, formulation and the level of inlet O2 was also evaluated.
Pure Pt was superior to catalysts containing Pt and Pd. Cyclic aging provided much better catalyst performance retention than steady state exposure. The scavenging effect of HCl and HBr, which accomplishes deposit removal in the combustion chamber, may also operate on the catalyst where cyclic operation assures a proper balance of temperature above and below 550° C.
Recommended Content
Authors
Topic
Citation
White, J. and Zakrajsek, C., "Implications of Precious Metal Catalysts with Leaded Fuels," SAE Technical Paper 810086, 1981, https://doi.org/10.4271/810086.Also In
References
- Shelef M. Otto K. Otto N. C. “Poisoning of Automotive Catalysts,” Advances in Catalysis 27 311 Academic Press 1978
- Ford Motor Company, Ltd., Ford Werke A.G. July 12 1978
- Tomsic V. J. “Catalytic Converter Plugging Propensity and Performance under Simulated Heavy-Duty Truck Operating Conditions on Leaded Fuel,” DuPont Report PLR 77-27 June 1977
- Shelef M. Dalla Betta R. A. Larson J. A. Otto K. Yao H. C. “Poisoning of Monolithic Noble Metal Oxidation Catalysts in Automobile Exhaust Environment,” National AIChE Meeting New Orleans March 1973
- Barnes G. J. Baron K. Summers J. C. “Scavenger and Lead Poisoning of Automotive Oxidation Catalysts,” SAE Paper No. 741062 Toronto October 1974
- Hegedus L. L. Summers J. C. Schlatter J. C. Baron K. “Poison-Resistant Catalysts for the Simultaneous Control of HC, CO and NO x Emissions,” Journal of Catalysis 56 321 1979
- Monroe D. R. “P and Pb Poisoning of Pelleted Three-Way Catalysts,” SAE paper No. 800859 June 11 1980
- Gallopoulos N. E. Summers J. C. Klimisch R. L. “Effect of Engine Oil Composition on the Activity of Exhaust Emission Oxidation Catalysts,” SAE paper No. 730598 Detroit May 1973
- Ebel R. H. “Catalytic Removal of Potential Air Pollutants from Auto Exhaust,” Advances in Environmental Sciences Pitts J. N. Metcalf R. L. 1 1969
- Neal A. H. Wigg E. E. Holt E. L. “Fuel Effects on Oxidation Catalysts and Catalyst Equipped Vehicles,” SAE Paper No. 730593 Detroit May 1973
- Koberstein E. Pletka H. D. Volker H. “Catalytic Purification of Automotive Exhaust Gases under European Conditions,” SAE Paper No. 800394 Detroit February 1980
- Newby W. E. DuMont L. F. “Mechanism of Combustion Chamber Deposit and Formation with Leaded Fuels,” Ind. and Eng. Chem. 45 6 1336 1953
- McArthur D. P. “NO x Catalyst Degradation by Contamination Poisoning,” The Catalytic Chemistry of Nitrogen Oxides Klimish R. L. Larson J. G. Plenum Press New York 1975
- Chemical and Engineering News 52 19 5 May 13 1974
- Acres G. J. K. Cooper B. J. Shutt E. Malerbi B. W. “Pt Catalysts for Exhaust Emission Control: The Mechanism of Catalyst Poisoning by Pb and P Compounds,” Catalysts for the Control of Automotive Pollutants ACS Advances in Chemistry Series 143 1975
- McArthur D. P. “Deposition and Distribution of Pb, P, Ca, Zn and S Poisons on Automobile Exhaust NO x Catalysts,” Catalysts for the Control of Automotive Pollutants McEvoy J. E. Advances in Chemistry Series 143 1975
- Hetrick S. S. Hills F. J. “Fuel Pb and S Effects on Aging of Exhaust Emission Control Catalysts,” SAE paper No. 730596 Detroit May 1973
- Hideg L. Hoyt E. M. Jones J. H. Zakrajsek C. E. “Managed Secondary Air -- A means of Achieving Sulfate Emission Control with Catalyst Equipped Vehicles,” SAE paper 770296 Detroit February 1977
- Lester G. R. U. S. Patent 3,090,760 May 1963