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.

Date of Patent:
Aug. 20, 2024

Filed:

Sep. 12, 2022
Applicant:

Johnson Matthey Public Limited Company, London, GB;

Inventors:

Paul Joseph Andersen, Audubon, PA (US);

John Leonello Casci, Cleveland, GB;

Hai-Ying Chen, Wayne, PA (US);

Jillian Elaine Collier, Reading, GB;

Joseph Michael Fedeyko, Wayne, PA (US);

Rodney Kok Shin Foo, Nivelles, BE;

Raj Rao Rajaram, Reading, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/94 (2006.01); B01D 53/56 (2006.01); B01D 53/86 (2006.01); B01J 29/00 (2006.01); B01J 29/06 (2006.01); B01J 29/064 (2006.01); B01J 29/072 (2006.01); B01J 29/076 (2006.01); B01J 29/46 (2006.01); B01J 29/56 (2006.01); B01J 29/76 (2006.01); B01J 29/80 (2006.01); B01J 29/83 (2006.01); B01J 29/85 (2006.01); B01J 35/56 (2024.01); C01B 39/38 (2006.01); C01B 39/46 (2006.01); C01B 39/54 (2006.01); B01J 29/72 (2006.01); B01J 29/87 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9418 (2013.01); B01D 53/565 (2013.01); B01D 53/8628 (2013.01); B01D 53/9431 (2013.01); B01D 53/945 (2013.01); B01J 29/005 (2013.01); B01J 29/061 (2013.01); B01J 29/064 (2013.01); B01J 29/072 (2013.01); B01J 29/076 (2013.01); B01J 29/46 (2013.01); B01J 29/56 (2013.01); B01J 29/76 (2013.01); B01J 29/7615 (2013.01); B01J 29/763 (2013.01); B01J 29/80 (2013.01); B01J 29/83 (2013.01); B01J 29/85 (2013.01); B01J 35/56 (2024.01); C01B 39/38 (2013.01); C01B 39/46 (2013.01); C01B 39/54 (2013.01); B01D 2251/2062 (2013.01); B01D 2251/2067 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/30 (2013.01); B01D 2255/50 (2013.01); B01D 2255/502 (2013.01); B01D 2255/504 (2013.01); B01J 2029/062 (2013.01); B01J 29/72 (2013.01); B01J 29/87 (2013.01); B01J 2229/18 (2013.01); B01J 2229/183 (2013.01); B01J 2229/36 (2013.01); Y02A 50/20 (2018.01); Y02C 20/10 (2013.01); Y02T 10/12 (2013.01);
Abstract

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt.


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