Credit: RHYS LEWIS, AHS, DECD, UNISA/EQUINOX GRAPHICS/SCIENCE PHOTO LIBRARY

Caption: Animation of the inside of a catalytic converter attached to a car's engine, showing how it converts harmful polluting gases into relatively harmless ones. The converter sits near the engine and in the path of the hot exhaust gases. It consists of a honeycomb structure made of a ceramic, which provides a large surface area. The inside surface is lined with the catalyst, which is a combination of rhodium (Rh) and platinum (Pt) metals. On the rhodium, nitrogen oxides (nitric oxide, NO, shown here) are reduced to nitrogen and oxygen. On the platinum, carbon monoxide (CO) reacts with oxygen to form carbon dioxide. These gases are then emitted in the exhaust.

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Keywords: air pollution, animated, animation, burning, car, carbon dioxide, carbon monoxide, catalysing, catalytic converter, chemical, chemicals, chemistry, co2, diesel, driving, education, educational, exhaust, fuel, fuels, gas, gases, gasoline, greenhouse gas, how it works, hydrocarbon, inside, interior, internal, metal, metals, nitric, nitrogen, oxidation, oxide, oxides, oxidising, petrol, platinum, pollutant, pollutants, process, reacting, reaction, reducing, reduction, rhodium, vehicle, workings

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How a catalytic converter works

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Duration: 00:01:01.09

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 1.6G

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Capture format: QuickTime Animation

Codec: PNG

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