Importance

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Abstract

Developed are a synthesizing method for carbon nanostructures where the generation of tar-like byproducts is reduced and carbon nanostructures are generated highly efficiently, and a unit therefor. A highly efficient material spraying type carbon nanostructure synthesizing apparatus according to the present invention is formed of a catalyst body that is placed inside a reaction tube, a heating unit that is provided in order to heat the vicinity of this catalyst body to the temperature range where carbon nanostructures are generated, a material gas supplying pipe for introducing a material gas into reaction tube which is provided in such a manner that an end of this supplying pipe is placed in proximity to catalyst body, and a preheating unit for preheating the material gas supplying pipe to a temperature range where no tar-like products are generated from a material gas. No tar-like substance is generated in the material gas supplying pipe, and the material gas is directly sprayed against the catalyst body, skipping the middle temperature range. Therefore, the probability of reaction occurring is high, and the yield in the generation of carbon nanostructures is high. Most of the material gas is consumed; thus, no tar-like substance is generated inside reaction tube.

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First Claim