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Netgains: 'Cutting vehicle pollution' - school science resource and 'Beschoice' virtual learning environment extends to GCSE Science
Cutting vehicle pollution - school science resource
Johnson Matthey has recently updated this introduction to autocatalysts and exhaust management, its most popular download aimed at schools. Presented as a 24-page written report produced by a student (Otto Catalyst), this free resource introduces the chemical components of vehicle pollution (carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter), their impact on the environment and human health, and approaches to reduce emissions from vehicles powered by gasoline or diesel. The autocatalyst and its role in a catalytic converter is explained, showing how the autocatalyst works to reduce gasoline engine emissions. Diesel engine emission reduction, by using particulate filters, coupled with selective catalytic reduction systems or adsorber catalysts to remove nitrogen oxides, is also covered.
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