| abstract |
The carbon nano-tube manufacturing method disclosed in the present invention is a carbon nano-tube manufacturing method that uses a carbon source that contains carbon and is pyrolyzed in a heated state, and a catalyst used for generating carbon nano-tubes from said carbon source to synthesize said carbon nano-tubes on a heated support arranged in a reactor. This method is characterized by the following facts: it has a catalyst loading step wherein said catalyst is loaded on said support by circulating the raw material of said catalyst on said support, a synthesis step wherein said carbon nano-tubes are synthesized on said support by circulating said carbon source on said support, and a separation step wherein said carbon nano-tubes are separated from said support by circulating a separation gas flow on said support; said catalyst loading step, synthesis step, and separation step are carried out while switching said catalyst raw material, carbon source, and separation gas flows with said support kept in said heated state. |