Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres

Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres

The present invention relates to a catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres. The catalyst contains iridium on a support material. A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dio...

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Hauptverfasser: van den Tillaart, Hans, Leyrer, Jürgen, Strehlau, Wolfgang, Lox, Egbert, Kreuzer, Thomas, Plog, Carsten, Andorf, Renato, Markert, Norbert, Stengel, Thomas
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creator van den Tillaart, Hans
Leyrer, Jürgen
Strehlau, Wolfgang
Lox, Egbert
Kreuzer, Thomas
Plog, Carsten
Andorf, Renato
Markert, Norbert
Stengel, Thomas
description The present invention relates to a catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres. The catalyst contains iridium on a support material. A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dioxide or a dealuminized zeolite in the acid H form with a modulus of more than 20, preferably more than 100, or mixtures thereof are used as support materials. Iridium is deposited on the external surfaces of these support materials with average particle sizes between 10 and 30 nm. The catalyst is particularly suitable for treating exhaust gases from lean-burn gasoline engines or from diesel engines.
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title Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres
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