METHOD AND APPARATUS FOR PRODUCING CARBON NANOTUBES

摘要

Carbon nanotubes are grown by supplying raw material gas 30 comprising a carbon compound to be a raw material of the carbon nanotubes into the inside of a reaction vessel tube 14 in which a catalyst 26 to grow the carbon nanotubes is charged. At this time, halogen-containing material gas 32 to reduce the amount of a carbon product such as amorphous carbon produced besides carbon nanotubes that deposits on the surface of catalyst particles 44 due to supply of the raw material gas 30 is further supplied into the inside of the reaction vessel tube 14. Thereby, it is possible to produce elongated carbon nanotubes.

主权项

1. A method for producing carbon nanotubes comprising a step of growing carbon nanotubes by supplying a carbon compound to be a raw material of the carbon nanotubes in a vessel in which a catalyst to grow the carbon nanotubes is charged,
wherein, in the step, a halogen-containing material comprising at least one of a halogen simple substance and a halogen compound is further supplied into the vessel in order to reduce the amount of a carbon product produced besides the carbon nanotubes that deposits on the catalyst surface due to supply of the carbon compound.