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:
Apr. 24, 2001
Filed:
Oct. 30, 1998
Applicant:
Inventors:
Bernard Coq, Montpellier Cedex, FR;
Gerard Delahay, Montpellier Cedex, FR;
Francois Fajulas, Montpellier Cedex, FR;
Bernard Neveu, Puteaux, FR;
Jean-Bernard Peudpiece, Mont Saint Aignan, FR;
Stéphane Kieger, Haguenau, FR;
Assignee:
Grand-Paroiesse S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 8/00 ; B01J 2/904 ;
U.S. Cl.
CPC ...
B01J 8/00 ; B01J 2/904 ;
Abstract
Zeolites partially exchanged with copper, in particular faujasites, in which the copper does not largely occupy the small cages (for example the sodalite cages of the faujasites), are used as non-nitrogen-protoxide-generating SCR catalysts. Particular attention is drawn to certain mixed rare-earth/copper zeolites. The selectivity of the reduction of NOx to N,is correlated with the TPR diagram of the catalysts.