Method and apparatus for manufacturing carbon nanotube

Details Method and apparatus for manufacturing carbon nanotube Method and apparatus for manufacturing carbon nanotube

2007-12-07

2011-12-27

Hendrickson, Stuart (Department: 1736)

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

C423S447100, C423S44500R, C977S842000, C977S843000

Reexamination Certificate

active

08084011

ABSTRACT:
A carbon nanotube manufacturing method wherein a catalyst is heated in a reaction chamber while the reaction chamber is filled with argon gas containing hydrogen. When a predetermined temperature is reached in the reaction chamber, the reaction chamber is evacuated. Then a raw material gas as a carbon source is charged and sealed in the reaction chamber whereupon the synthesis of carbon nanotube begins. Subsequently, when a condition in which the synthesis of carbon nanotubes has proceeded to a predetermined level is detected, gases in the reaction chamber are exhausted. Then, the raw material gas is changed and sealed in the reaction tube again. Thereafter, the charging (synthesizing) operation and the exhausting operation are repeated until the carbon nanotube with a desired film thickness are synthesized. A carbon nanotube manufacturing apparatus is also disclosed.

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