Scr catalyst device containing vanadium oxide and molecular sieve containing iron
AssigneeUmicore AG & Co. KG
InventorsStephan MALMBERG, Nicola SOEGER
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Abstract
The invention relates to a catalyst device for purifying exhaust gases containing nitrogen oxide by means of selective catalytic reduction (SCR), comprising at least two catalytic regions, the first region containing vanadium oxide and cerium oxide, and the second region containing a molecular sieve containing iron. The invention also relates to uses, the catalyst device and methods for purifying exhaust gases.
Claims18
Catalyst device for purifying exhaust gases containing nitrogen oxide by means of selective catalytic reduction (SCR), comprising at least two catalytic regions, the first region containing vanadium oxide and cerium oxide, and the second region containing a molecular sieve containing iron.
System or device, comprising a catalyst device according to the invention and an upstream device releasing exhaust gases, in particular a combustion engine.
Dependencies are inferred from the claim text.