EXTRUDED HONEYCOMB CATALYST
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United States of America Patent
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Feb 11, 2016
app pub date -
Aug 17, 2015
filing date -
Aug 3, 2011
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Abstract
An extruded honeycomb catalyst for nitrogen oxide reduction according to the selective catalytic reduction (SCR) method in exhaust gases from motor vehicles includes an extruded active carrier in honeycomb form having a first SCR catalytically active component and with a plurality of channels through which the exhaust gas flows during operation, and a washcoat coating having a second SCR catalytically active component being applied to the extruded body, wherein the first SCR catalytically active component and the second SCR catalytically active component are each independently one of:
- (i) vanadium catalyst with vanadium as catalytically active component;(ii) mixed-oxide catalyst with one or more oxides, in particular those of transition metals or lanthanides as catalytically active component; and(iii) an Fe- or a Cu-zeolite catalyst.
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