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:
Jul. 04, 2017
Filed:
Feb. 21, 2014
Applicant:
Umicore Ag & Co. KG, Hanau-Wolfgang, DE;
Inventors:
Christoph Reith, Motten, DE;
Michael Seyler, Rodenbach, DE;
Assignee:
UMICORE AG & CO. KG, Hanau-Wolfgang, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/94 (2006.01); F01N 3/24 (2006.01); B01J 35/00 (2006.01); F01N 3/20 (2006.01); F01N 3/10 (2006.01); F01N 3/035 (2006.01); B01J 37/02 (2006.01); B01J 29/08 (2006.01); B01J 29/18 (2006.01); B01J 29/40 (2006.01); B01J 29/65 (2006.01); B01J 29/70 (2006.01); B01J 29/83 (2006.01); B01J 29/85 (2006.01); B01J 35/04 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9418 (2013.01); B01D 53/9477 (2013.01); B01J 35/0006 (2013.01); B01J 37/0246 (2013.01); F01N 3/035 (2013.01); F01N 3/103 (2013.01); F01N 3/106 (2013.01); F01N 3/2066 (2013.01); B01D 2251/2062 (2013.01); B01D 2255/50 (2013.01); B01D 2255/911 (2013.01); B01J 29/084 (2013.01); B01J 29/18 (2013.01); B01J 29/40 (2013.01); B01J 29/65 (2013.01); B01J 29/7007 (2013.01); B01J 29/7015 (2013.01); B01J 29/83 (2013.01); B01J 29/85 (2013.01); B01J 35/04 (2013.01); F01N 2510/0682 (2013.01); F01N 2570/18 (2013.01); Y02T 10/24 (2013.01);
Abstract
The invention relates to the possibility of improving selective catalytic reduction (SCR), which is the selective reaction of nitrogen oxides with ammonia in the exhaust gas of combustion processes on an exhaust-gas catalytic converter suitable therefor—the SCR catalytic converter. For this purpose, materials used in the catalytic converter for storing ammonia are distributed on the catalyst carrier in such a way that, viewed in the flow direction, a region having low ammonia storage capacity is followed by a region of higher ammonia storage capacity.