For Catalytic Converter we have terms and definitions in 8 topics. The topics are Air Quality, Atmospheric Chemistry, Automotive, Car Care, Energy, Environment, Global Warming and Import Cars.

Catalytic Converter (Air Quality)

An air pollution abatement device used primarily on motor vehicles and other sources. It removes organic contaminants by oxidizing them into carbon dioxide and water through chemical reaction. May convert nitrogen dioxide to nitrogen and oxygen or promote other similar reactions

Catalytic Converter (Atmospheric Chemistry)

An air pollution control device using the exhaust system of cars. The converter helps complete combustion of any fuel that was not burned in the engine and reduce the presence of other harmful emission concentrations. The converter changes the unburned hydrocarbons and carbon monoxide in the exhaust into carbon dioxide and water vapor. The converter use chemical catalysis to create this change. [Fleisher, Paul. Ecology A to Z. Dillon Press, New York. 1994. p. 38.]
Catalytic destruction of ozone -
Cl2 + hv -> 2Cl* (this reation produces chlorine radicals)
Cl* + O3 -> ClO* + O2 (chlorine reacts with ozone to form chlorine monoxide)
O3 + hv -> O* + O2 (ozone is also photolyzed to produce atomic oxygen)
ClO* + O* -> Cl* + O2 (chlorine radicals are reformed)
---------------------
NET: 2O3 -> 3O2 (the result is conversion of ozone to molecular oxygen)

Catalytic Converter (Automotive)

Often simply called a "catalyst": a stainless-steel canister fitted to a car's exhaust system that contains a thin layer of catalytic material spread over a large area of inert supports. The material used is some combination of platinum, rhodium, and palladium; it induces chemical reactions that convert an engine's exhaust emissions into less harmful products. So-called three-way catalysts are particularly efficient; their operation, however, demands very precise combustion control, which can be produced only by a feedback fuel-air-ratio control system.

Catalytic Converter (Car Care)

An integral part of vehicle emission control systems since 1975. Oxidizing converters remove hydrocarbons and carbon monoxide (CO) from exhaust gases, while reducing converters control nitrogen oxide (NOx) emissions. Both use noble metal (platinum, palladium or rhodium) catalysts that can be "poisoned" by lead compounds in the fuel or lubricant.

Catalytic Converter (Energy)

A device containing a catalyst for converting automobile exhaust into mostly harmless products.

Catalytic Converter (Environment)

An air pollution abatement device that removes pollutants from motor vehicle exhaust, either by oxidizing them into carbon dioxide and water or reducing them to nitrogen.

Catalytic Converter (Global Warming)

A device containing a catalyst for converting automobile exhaust into mostly harmless products.

Catalytic Converter (Import Cars)

An automotive exhaust-system component, made of stainless steel, containing a catalyst to reduce oxides of nitrogen (Nox), and/or hydrocarbon (HC), and carbon monoxide (CO), in tailpipe emissions.

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