Zeolite catalyst with improved NOx reduction in SCR

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component

Reexamination Certificate

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C423S700000, C423S713000, C502S034000, C502S055000, C502S060000, C502S074000, C502S085000

Reexamination Certificate

active

07968068

ABSTRACT:
The present invention is directed to a novel metal-promoted zeolite catalyst, a method of producing the catalyst and a method of using the catalyst for the selective catalytic reduction of NOxwith improved hydrothermal durability. The novel metal-promoted zeolite is formed from a low sodium zeolite and is hydrothermally treated after metal ion-exchange.

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