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:
Feb. 28, 2017
Filed:
Aug. 14, 2015
Applicant:
Johnson Matthey Public Limited Company, London, GB;
Inventors:
Olivier Sonntag, Stuttgart, DE;
Tim Genschow, Royston, GB;
Andrew Newman, Royston, GB;
Isabel Zoe Tingay, Cambridge, GB;
Gudmund Smedler, Royston, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/94 (2006.01); F01N 3/20 (2006.01); B01J 35/00 (2006.01); B01J 21/06 (2006.01); B01J 23/22 (2006.01); B01D 53/86 (2006.01); B01J 29/072 (2006.01); B01J 29/76 (2006.01); B01J 29/56 (2006.01); B01J 35/04 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9418 (2013.01); B01D 53/8628 (2013.01); B01D 53/9477 (2013.01); B01D 53/9481 (2013.01); B01J 21/06 (2013.01); B01J 23/22 (2013.01); B01J 29/072 (2013.01); B01J 29/56 (2013.01); B01J 29/763 (2013.01); B01J 35/0006 (2013.01); B01J 35/04 (2013.01); F01N 3/2066 (2013.01); B01D 2251/2062 (2013.01); B01D 2255/20723 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/40 (2013.01); B01D 2255/50 (2013.01); B01D 2255/9032 (2013.01); B01D 2255/9155 (2013.01); B01D 2257/404 (2013.01); F01N 3/103 (2013.01); F01N 2510/0682 (2013.01); F01N 2510/0684 (2013.01); F01N 2570/18 (2013.01);
Abstract
Provided is a system for treating an exhaust gas comprising a first SCR catalyst zone comprising vanadium loaded on a metal oxide selected from TiO, ZrO, SiO, CeO, and AlO; and a second SCR catalyst zone comprising a copper loaded small-pore molecular sieve, wherein the first SCR catalyst zone is disposed upstream of the second SCR catalyst zone with respect to normal exhaust gas flow through the system. Also provided is a method for using the system to treat exhaust gas.