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:
May. 12, 2020
Filed:
Oct. 19, 2016
Applicant:
Jxtg Nippon Oil & Energy Corporation, Chiyoda-ku, Tokyo, JP;
Inventors:
Sosuke Higuchi, Tokyo, JP;
Nobuhiro Kimura, Tokyo, JP;
Assignee:
JXTG Nippon Oil & Energy Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/48 (2006.01); B01J 37/08 (2006.01); B01J 37/04 (2006.01); B01J 23/00 (2006.01); B01J 23/31 (2006.01); C07C 11/167 (2006.01); B01J 23/887 (2006.01);
U.S. Cl.
CPC ...
C07C 5/48 (2013.01); B01J 23/002 (2013.01); B01J 23/31 (2013.01); B01J 23/8876 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); C07C 11/167 (2013.01); B01J 2523/54 (2013.01); B01J 2523/68 (2013.01); C07C 2523/18 (2013.01); C07C 2523/28 (2013.01); C07C 2523/31 (2013.01); C07C 2523/745 (2013.01); C07C 2523/75 (2013.01); C07C 2523/887 (2013.01);
Abstract
A method for producing butadiene comprises a step of obtaining a product gas containing butadiene, by feeding a raw-material gas containing straight-chain butene and an oxygen-containing gas containing molecular oxygen to a reactor and performing oxidative dehydrogenation reaction in the presence of a catalyst, wherein the catalyst comprises a composite oxide containing molybdenum and bismuth, and the concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.05 mol % to 7.0 mol %.