Process for directly synthesizing ultra-long single-wall continuous nano carbon tube
Title：
Process for directly synthesizing ultra-long single-wall continuous nano carbon tube
Application Number：
 02100684
Application Date：
 2002/02/22
Announcement Date：
 2002/08/28
Pub. Date：
Publication Number：
 1365946
Announcement Number：
 1176014
Grant Date：
 2004-11-17
Granted Pub. Date：
 2004-11-17
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C01B 31/02
Applicant(s)：
 Qinghua Univ
Inventor(s)：
 Zhu Hongwei, Xu Cailu, Wu Dehai
Key Words：
 directly synthesizing, ultra-long, single-wall, continuous, nano carbon tube
Abstract：
 A technological process for preparing ultra-long single-wall continuous nanometre carbon tubes by the vertical floating catalytic cracking method includes such steps as preparing reaction solution from n-hexane as carbon source, ferrocene as catalyst and thiophene as additive, introducing it in the form of vapour along with hydrogen gas into a reactor for catalytic cracking. Under specific technological parameters, ultra-long cord-shape single-wall nm carbon tube bundle can be obtained, the tubes have good orientation, their purity up to 85%, they are continuous and straight with length up to 20 cm (length to diameter ratio greater than 108). The said method only needs one vertical electric furnace and no need of pre-reduction. Its advantages include good orientation performance, high purity, long length, simple operation and low cost.
Claim：
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PCT：
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