A growing number of automotive exhaust gas aftertreatment technologies rely on flow- through monoliths. Besides the three-way catalytic converter (TWC) for gasoline driven engines, diesel vehicles call for more innovation to meet the pollution limits of the future. Among these are diesel oxidation catalysts (DOC), NOx storage catalysts (NSC) and catalysts for the selective catalytic reduction of NOx (SCR) using hydrocarbons or ammonia.
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