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. 13, 2016
Filed:
Dec. 13, 2010
Dirk A. Grossschmidt, Mannheim, DE;
Bilge Yilmaz, New York, NY (US);
Dirk Klingler, Mannheim, DE;
Bernd Zoels, Obrigheim, DE;
Dirk A. Grossschmidt, Mannheim, DE;
Bilge Yilmaz, New York, NY (US);
Dirk Klingler, Mannheim, DE;
Bernd Zoels, Obrigheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Described is an iron-containing zeolite wherein the number of iron sites, based on the zeolite, is greater than the number of cationic positions in the zeolite. Also described is an iron-containing zeolite preparable by gas phase reaction with iron pentacarbonyl, said zeolite having a greater specific surface area than iron-containing zeolites prepared analogously by ion exchange and/or being more hydrothermally stable than iron-containing zeolites prepared analogously by ion exchange, or wherein the number of iron clusters larger than 10 nm is less than 15% by weight, based on the total amount of iron. Further described is a process for preparing an iron-containing zeolitic material, which comprises doping with iron by means of a gas phase reaction using iron pentacarbonyl. Further described is a process for catalytic reduction of nitrogen oxides using catalysts comprising said iron-containing zeolitic materials.