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:
Sep. 20, 2022
Filed:
Jul. 10, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Myungji Suh, Daejeon, KR;
Jun Han Kang, Daejeon, KR;
Kyong Yong Cha, Daejeon, KR;
Dong Hyun Ko, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 5/48 (2006.01); B01J 23/31 (2006.01); B01J 23/80 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01);
U.S. Cl.
CPC ...
C07C 5/48 (2013.01); B01J 23/31 (2013.01); B01J 23/80 (2013.01); B01J 37/0236 (2013.01); B01J 37/038 (2013.01); C07C 2523/31 (2013.01); C07C 2523/80 (2013.01);
Abstract
An exemplary embodiment of the present application provides a method for preparing butadiene, the method comprising a process of performing an oxidative dehydrogenation reaction by introducing a reactant comprising butene, oxygen, nitrogen, and steam into a reactor which is filled with a catalyst, in which during a first start-up of the oxidative dehydrogenation reaction, the oxygen is introduced into the reactor before the butene, or the oxygen is introduced into the reactor simultaneously with the butene.