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:
Sep. 27, 2016
Filed:
Sep. 03, 2013
Applicant:
Allessa Gmbh, Frankfurt, DE;
Inventors:
Doris Neumann, Offenbach, DE;
Joachim Ritzer, Rosenbach, DE;
Assignee:
ALLESSA GMBH, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/36 (2006.01); B01J 27/188 (2006.01); B01J 21/18 (2006.01); B01J 23/42 (2006.01); B01J 37/02 (2006.01);
U.S. Cl.
CPC ...
C07C 209/365 (2013.01); B01J 27/188 (2013.01); B01J 21/18 (2013.01); B01J 23/42 (2013.01); B01J 37/0201 (2013.01); Y02P 20/52 (2015.11);
Abstract
A method is described for the catalytic hydrogenation of aromatic nitro compounds with hydrogen to the corresponding amines in the presence of a supported catalyst comprising platinum. The method is characterized in that the catalyst comprising platinum has been modified with a tungsten compound and with a phosphorus compound in an oxidation state of <5. High yields and high selectivities are possible with the method.