Title:
DOUBLE WALL CARBON NANOTUBES AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2013/066105
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing carbon nanotubes, comprising: a step of preparing a supported catalyst; a temperature-raising step of inserting the supported catalyst into a reactor, injecting hydrocarbon gas and hydrogen gas at the same time, and raising the temperature of the reactor to 900 to 1000˚C to synthesize carbon nanotubes; and a temperature-lowering step of lowering the temperature of the reactor to a room temperature or 200 ˚C, injecting only hydrogen gas and synthesizing carbon nanotubes. The carbon nanotubes manufactured by said manufacturing method have high purity, and excellent selectivity for double wall carbon nanotubes can be achieved.
Inventors:
YOUM KYOUNG TAE (KR)
KIM BYEONG YEOL (KR)
LEE YOUNG SIL (KR)
LIM BO KYUNG (KR)
KIM BYEONG YEOL (KR)
LEE YOUNG SIL (KR)
LIM BO KYUNG (KR)
Application Number:
PCT/KR2012/009185
Publication Date:
May 10, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
CHEIL IND INC (KR)
International Classes:
C01B31/02; B01J23/75; B82B3/00; B82Y40/00
Foreign References:
| KR20070061473A | 2007-06-13 | |||
| KR20100045247A | 2010-05-03 | |||
| KR20090070087A | 2009-07-01 | |||
| KR20100042765A | 2010-04-27 | |||
| KR20080000033A | 2008-01-02 |
Attorney, Agent or Firm:
CHOI, Duk Kyu et al. (KR)
최덕규 (KR)
최덕규 (KR)
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