Diesel oxidation catalyst (DOC)
The post treatment of polluting components of combustion engines - Compression ignition engines

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Diesel oxidation catalyst (DOC)
The post treatment of polluting components of combustion engines - Compression ignition engines

Authors : Alain SASSI, Emmanuel ROHART, Gérard BELOT

Review date: June 1, 2019 | Lire en français

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2. Diesel oxidation catalyst (DOC)

2.1 Key issues and functional analysis

Introduced in the 1970s to clean up pollution from construction equipment in confined spaces (mines), oxidation catalysts are primarily designed to oxidize unburnt hydrocarbons (HC) and carbon monoxide (CO) according to the equations (1) and (2) :

Oxidation equilibria of CO and HC :

CO+1/2  O2→CO2
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