| abstract |
The present invention injects a carbon source into a catalyst particle comprising at least one transition metal and a non-transition metal component selected from iron, cobalt, nickel, aluminum, magnesium, manganese, zinc, chromium, molybdenum, silicon, and the like at 600 to 800 ° C. In the method for producing a carbon nanotube of the bundle structure in a vertical shape on the lower end on the catalyst particles by chemical vapor deposition method, the apparent density of the catalyst particles for producing the bundle structure carbon nanotubes is 0.03 ~ 0.90g / cc, The apparent density of the carbon nanotubes is 0.003 to 0.010 g / cc, including Al and Mn, which are non-transition metals used in the composition of the catalyst particles for producing carbon nanotubes, and these ratios have a Mn content of 0.1 to 20 by weight of aluminum. It is characterized in that the range of 3% to 15nm range of the diameter distribution of the carbon nanotubes of the bundle structure, the diameter of the oriented bundle ranges from 5 to 100㎛ The length to provide a range that the characteristics 10~500㎛ method for producing carbon nanotubes of the bundle structure of. |