Catalytic Converter Vehicle System Performance: Rapid versus Customer Mileage

Hancock, E.; Campau, R. M.; Connolly, R.

doi:10.4271/710292

Cited by 8 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the use of platinum group metals has certain advantages that preclude the use of other materials, namely: their proven effectiveness as catalysts, low-threshold activation temperatures, fast warm-up response, and apparent Environmental Health Perspectives Table 3. Estimated impact of platinum demand required for catalytic exhaust control systems (1975)(1976)(1977)(1978)(1979)(1980)(1981)(1982)(1983)(1984)(1985)(1986)(1987)(1988)(1989)(1990) ability to withstand thermal stress (39,42). The amount of platinum and palladium used is apparently dependent in part upon mechanical and chemical design as well as performance required to meet emission reduction requirements.…”

Section: Introductionmentioning

confidence: 99%

Noble metals: a toxicological appraisal of potential new environmental contaminants.

Brubaker¹,

J²,

Bridbord³

et al. 1975

Environ Health Perspect

View full text Add to dashboard Cite

The public health benefits expected by reducing known hazardous emissions from mobile sources should not be compromised by increasing levels of other potentially hazardous unregulated emissions. Catalytic converters are going to be used to meet the statutory requirements on carbon monoxide and hydrocarbon emissions from light duty motor vehicles. Platinum and palladium metals are the catalytic materials to be used in these emission control devices. Preliminary experimental evidence and analysis of the impact of these control devices on the future use and demand for platinum indicates that this metal may appear at detectable levels in the environment by the end of this decade. At the present time, platinum and palladium are not present in the public environment and represent potentially new environmental contaminants as a consequence of use of this new abatement control technology. There is relatively little information available to adequately assess the potential health hazards that may be associated with exposure to these metals and their compounds. Analysis of the environmental problems and concerns associated with possible new environmental contaminants are discussed. Limited estimates are made on community exposure by use of a meteorological dispersion model. Biodegradation potential and attention is also given to the limited toxicological information available.

show abstract

Section: Introductionmentioning

confidence: 99%