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:
Aug. 21, 2007
Filed:
Mar. 06, 2002
Applicants:
Meinhard Schwefer, Meschede, DE;
Joachim Motz, Kelkheim, DE;
Carsten Gehlen, Marl, DE;
Inventors:
Assignee:
UHDE GmbH, Dortmund, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/86 (2006.01); B01J 29/064 (2006.01); B01J 29/46 (2006.01); B01J 29/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of reducing the NO content in gases is described. A selected zeolite catalyst is used in the method. This catalyst is present in the H form and/or contains exchanged iron and is characterized by the presence of nonlattice aluminum in addition to the lattice aluminum in a molar ratio of from 1:2 to 20:1. The method can be used in nitric acid production for reducing the NO content of process gases or offgases.