Chemical in a catalytic converter to promote the combustion of hydrocarbons and carbon monoxide at relatively low temperatures.

A type of catalyst (catalytic converter) which chemically converts HC (hydrocarbons) and CO (carbon monoxide) to water vapor and carbon dioxide.

A two-way catalytic converter or the chamber in a three-way converter that oxidized unburned hydrocarbons (HC) and carbon monoxide (CO) to reduce pollution.

Any substance which accelerates the rate of oxidation of a polymer. Copper is such an oxidation catalyst and, in lesser degrees, Manganese, Chromium and Iron and other transition metals.

A two-way catalytic converter which promotes the oxidation of HC and CO in an engine's exhaust stream, as distinguished from a three-way or reduction catalyst.