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Durability of Palladium Only Three-way Automotive Emisson Control Catalysts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1989 by SAE International in United States
Annotation ability available
The noble metal palladium (Pd) has the capability of simultaneously converting significant quantities of HC, CO and NOx in automotive exhaust. Primary interests in using palladium-containing TWC catalysts are overall noble metal cost reduction, reduction in rhodium usage and important performance advantages. Dynamometer aging experiments comparing palladium and platinum/rhodium catalysts were conducted under a variety of operating conditions. Vehicle evaluation of these aged catalysts under U.S. FTP-75, European ECE-15 and Japan 10-Mode conditions indicate that palladium-only TWC technology is viable for achieving high levels of three-way control. Vehicle aging studies (25K miles) were also conducted. They confirm the excellent durability results obtained from the dynamometer aging studies: the palladium-only TWC catalyst gave essentially equivalent U.S. FTP-75 and Japan 10-Mode performance to a high-tech platinum/rhodium catalyst.
|Technical Paper||Investigation of Catalytic Alternatives to Rhodium in Emissions Control|
|Technical Paper||Recent Trends in the Application of Tri-Metal Emission Control Catalysts|
CitationSummers, J., White, J., and Williamson, W., "Durability of Palladium Only Three-way Automotive Emisson Control Catalysts," SAE Technical Paper 890794, 1989, https://doi.org/10.4271/890794.
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