The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Sep. 28, 2007
Xinsheng Liu, Edison, NJ (US);
Pascaline Tran, Holmdel, NJ (US);
Gerald Lapadula, Piscataway, NJ (US);
Xinsheng Liu, Edison, NJ (US);
Pascaline Tran, Holmdel, NJ (US);
Gerald Lapadula, Piscataway, NJ (US);
BASF Catalysts LLC, Florham Park, NJ (US);
Abstract
The present invention is directed to a method for removal by oxidation of the excess ammonia (NH) 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.