Development of Advanced Platinum-Rhodium Catalyst for Future Emissions Requirements 1999-01-3627
In order to meet future emission standards for gasoline vehicles, catalyst designers have developed thermally durable three-way catalysts with enhanced activity. The most effective catalysts for achieving the required hydrocarbon conversion were those containing high levels of palladium. This has led to increased levels of palladium being used. Recent palladium price fluctuations have created interest in the possibility of using advanced platinum-based technologies. The performance of a new platinum-rhodium three-way catalyst (TWC) was compared with an advanced palladium-rhodium catalyst on an engine test-bed. The results showed the new platinum-rhodium catalyst gave equivalent, or better, performance at similar total precious metal cost. The performance on selected vehicles confirmed future emissions standards can be achieved with platinum-based catalysts.
Citation: Brisley, R., Collins, N., French, C., Morris, D. et al., "Development of Advanced Platinum-Rhodium Catalyst for Future Emissions Requirements," SAE Technical Paper 1999-01-3627, 1999, https://doi.org/10.4271/1999-01-3627. Download Citation
Author(s):
R. J. Brisley, N. R. Collins, C. French, D. Morris, M. V. Twigg
Affiliated:
Johnson Matthey Catalytic Systems Division, Royston, UK
Pages: 8
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advanced Three-way Catalysts-PT-123, Combustion and Emission Formation in SI Engines-SP-1478
Related Topics:
Three-way catalysts
Environmental regulations and standards
Catalysts
Emissions
Hydrocarbons
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