| abstract |
A method and apparatus for efficiently reacting a powdery or particulate reactant in a gas phase at a high temperature of 600 ° C. or higher. Moreover, it is providing the apparatus suitable for mass-producing a hollow nanofiber by making it a continuous process batchwise. Sometimes, in the method of manufacturing hollow nanofibers, it has high quality, high elasticity, high conductivity, high electron emission ability, and nanocapsule properties called carbon nanotubes with thin thickness and few graphite layer defects It is to provide a hollow nanofiber. The reaction field is maintained at a temperature of 600 ° C. or higher and substantially constant, and the powdery or particulate reaction object is intermittently introduced into the reaction field together with a gripper through which gas can pass. The gas phase reaction method is characterized in that the gas phase reaction is carried out by introducing the gas into the reaction field at a substantially constant flow rate. [Selection] Figure 1 |