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:
Apr. 23, 2024
Filed:
Jul. 22, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 32/162 (2017.01); B01J 21/02 (2006.01); B01J 23/22 (2006.01); B01J 27/25 (2006.01); B01J 31/12 (2006.01); B01J 37/08 (2006.01);
U.S. Cl.
CPC ...
C01B 32/162 (2017.08); B01J 21/02 (2013.01); B01J 23/22 (2013.01); B01J 27/25 (2013.01); B01J 31/122 (2013.01); B01J 37/08 (2013.01); C01P 2004/13 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01);
Abstract
The present invention relates to a method for preparing carbon nanotubes, the method including: preparing a support including AlO(OH) by primary heat treatment of Al(OH); preparing an active carrier by supporting a mixture including a main catalyst precursor and a cocatalyst precursor on the support; drying the active carrier through multi-stage drying including vacuum drying; preparing a supported catalyst by secondary heat treatment of the dried active support; and preparing carbon nanotubes in the presence of the supported catalyst, and the carbon nanotubes prepared by the method as described above can remarkably improve conductivity.