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:
Nov. 03, 2009
Filed:
Jun. 27, 2007
Applicants:
Naoki Miura, Niihama, JP;
Koichi Nagai, Niihama, JP;
Noriaki Suyasu, Niihama, JP;
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 38/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for regenerating a catalyst consisting of a mixed oxide having molybdenum, bismuth and iron used for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid by catalytically oxidizing propylene, isobutylene and/or tert.-butanol with molecular oxygen in a gas phase, in which the catalyst is regenerated by thermally treating the deteriorated catalyst in an atmosphere of a gas containing molecular oxygen at a temperature of 200 to 500° C., and then thermally treating the catalyst in the presence of a reducing compound at a temperature of 200 to 500° C.