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. 19, 2014
Filed:
Nov. 07, 2008
Applicants:
Yuji Mishima, Toyama, JP;
Shinya Hirahara, Toyama, JP;
Nobuaki Kodakari, Toyama, JP;
Inventors:
Assignee:
Sued-Chemie Catalysts Japan, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/367 (2006.01);
U.S. Cl.
CPC ...
Abstract
A dehydrogenation catalyst composition for use in preparing an alkenyl aromatic compound by dehydrogenation of an alkyl aromatic compound, a method for preparing the catalyst, and a process for using the catalyst in a dehydrogenation reaction. Carbon dioxide (CO) is present in the reaction in a molar ratio of 0.015 to 0.20 based on an aromatic compound in a material gas. The catalyst further includes an iron compound, an alkali metal, and about 13 to about 60 wt % of a rare earth element calculated as an oxide.