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:
Feb. 15, 2022
Filed:
Apr. 26, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Sang Jin Han, Daejeon, KR;
Dong Hyun Ko, Daejeon, KR;
Kyong Yong Cha, Daejeon, KR;
Jun Kyu Han, Daejeon, KR;
Sun Hwan Hwang, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/60 (2006.01); B01J 23/80 (2006.01); B01J 35/00 (2006.01); B01J 37/03 (2006.01); C01G 49/06 (2006.01); C07C 5/48 (2006.01); C07C 11/167 (2006.01); C01G 49/00 (2006.01); C01B 13/36 (2006.01); B01J 23/00 (2006.01); B01J 37/04 (2006.01); B01J 23/76 (2006.01);
U.S. Cl.
CPC ...
B01J 23/80 (2013.01); B01J 23/005 (2013.01); B01J 35/002 (2013.01); B01J 37/03 (2013.01); B01J 37/031 (2013.01); B01J 37/04 (2013.01); C01B 13/363 (2013.01); C01G 49/0063 (2013.01); C01G 49/06 (2013.01); C07C 5/48 (2013.01); C07C 11/167 (2013.01); B01J 23/76 (2013.01); B01J 2219/00166 (2013.01); C01P 2002/72 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C07C 2523/745 (2013.01); C07C 2523/76 (2013.01); C07C 2523/78 (2013.01); C07C 2523/80 (2013.01);
Abstract
A method of preparing a catalyst for oxidative dehydrogenation that includes coprecipitation and injecting inert gas or air at a specific time point to reduce the ratio of an inactive α-FeOcrystal structure, thereby improving the activity of the catalyst. Also provided is a method of performing oxidative dehydrogenation using the catalyst. When oxidative dehydrogenation of butene is performed using the catalyst, side reaction may be reduced, and selectivity for butadiene may be improved, providing butadiene with high productivity.