Ammonia oxidation catalyst for power utilities

Details Ammonia oxidation catalyst for power utilities Ammonia oxidation catalyst for power utilities

2007-09-28

2010-06-01

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C423S239100

Reexamination Certificate

active

07727499

ABSTRACT:
The present invention is directed to a method for removal by oxidation of the excess ammonia (NH3) gas (“ammonia slip”) resulting from flue gases that have been subjected to selective catalytic reduction (SCR) for reduction of nitrogen oxides (NOx) with ammonia. More specifically, the inventive method uses an ammonia oxidation catalyst consisting of a zeolite, one or more precious metals, and a base metal compound, to catalyze the oxidation of both ammonia and carbon monoxide (CO), while minimizing the formation of nitrogen oxides (NOx). The present invention is useful in treating flue and exhaust gases.

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PCT International Search Report, Date of Mailing Feb. 6, 2009.

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