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:
Dec. 31, 2013
Filed:
Apr. 16, 2011
Katja Adelmann, Darmstadt, DE;
Gerald Jeske, Neuberg, DE;
Rainer Domesle, Alzenau-Kaelberau, DE;
Nicola Soeger, Nidderau, DE;
Michael Seyler, Rodenbach, DE;
Anke Schuler, Woerth, DE;
Thomas R. Pauly, Oberursel, DE;
Barry W. L. Southward, Bristol, PA (US);
Katja Adelmann, Darmstadt, DE;
Gerald Jeske, Neuberg, DE;
Rainer Domesle, Alzenau-Kaelberau, DE;
Nicola Soeger, Nidderau, DE;
Michael Seyler, Rodenbach, DE;
Anke Schuler, Woerth, DE;
Thomas R. Pauly, Oberursel, DE;
Barry W. L. Southward, Bristol, PA (US);
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
The invention relates to the use of mixed oxides made of cerium oxide, zirconium oxide, rare earth sesquioxide and niobium oxide as catalytically active materials for the selective catalytic reduction of nitrogen oxides with ammonia or a compound that can decompose to form ammonia in the exhaust gas of internal combustion engines in motor vehicles that are predominantly leanly operated, and to compositions or catalysts which contain said mixed oxides in combination with zeolite compounds and/or zeolite-like compounds and are suitable for the denitrogenation of lean motor vehicle exhaust gases in all essential operating states.