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. 23, 2005
Filed:
May. 15, 2000
Damodara M. Poojary, Cupertino, CA (US);
Ramesh Borade, San Jose, CA (US);
Alfred Hagemeyer, Sunnyvale, CA (US);
Xiao Ping Zhou, Sunnyvale, CA (US);
Christopher E. Dube, Arlington, MA (US);
Ulrich Notheis, Dormagen, DE;
Ralph Armbrust, Leverkusen, DE;
Christian Rasp, Bergisch Gladbach, DE;
David M. Lowe, Mountain View, CA (US);
Damodara M. Poojary, Cupertino, CA (US);
Ramesh Borade, San Jose, CA (US);
Alfred Hagemeyer, Sunnyvale, CA (US);
Xiao Ping Zhou, Sunnyvale, CA (US);
Christopher E. Dube, Arlington, MA (US);
Ulrich Notheis, Dormagen, DE;
Ralph Armbrust, Leverkusen, DE;
Christian Rasp, Bergisch Gladbach, DE;
David M. Lowe, Mountain View, CA (US);
Symyx Technologies, Inc., Santa Clara, CA (US);
Bayer AG, Leverkusen, DE;
Abstract
Noble metal/reducible metal oxide catalysts effective for the direct amination of aromatic hydrocarbons and heterocyclic analogs thereof are disclosed. In one embodiment, the cataloxidant comprises a noble metal selected from Pd, Rh, Ir and/or Ru and a reducible metal oxide. In another embodiment, the cataloxidant comprises a noble metal and a reducible oxide of a metal selected from Ni, Mn, V, Ce, Th, Pr, Te, Re, Co, Fe, Cu and/or Bi. A preferred cataloxidant comprises one or more noble metals selected from Pd, Rh, Ir and/or Ru, in combination with nickel oxide and/or manganese oxide. In preferred applications, benzene can be aminated in the presence of the cataloxidants to form aniline. A benzene conversion of at least 5% is achieved, with more than 90% selectivity for aniline. Significantly, the cataloxidant can be regenerated without a substantial loss of performance.