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Catalytic converter

Catalytic converter

A506/0033

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Credit

ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY

Caption

Catalytic converter. Part of a catalytic converter from a car exhaust. This device reduces the toxic emissions from an internal combustion engine. It does this by converting the harmful exhaust by- products into relatively harmless ones. The inner surface is coated with an alloy containing platinum, rhodium and palladium. Oxidation catalysts convert hydrocarbons into carbon dioxide and water. Three-way catalysts convert oxides of nitrogen back into nitrogen. The addition of a catalytic converter to a car necessitates the use of unleaded fuel since the lead compounds added to regular petrol as anti-knocking agents can destroy the catalyst.

Release details

Model release not required. Property release not required.

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