| 摘要 |
PURPOSE:To obtain a carbon fiber having high generation density and long fiber length, in high efficiency, by a vapor-phase process, by reacting a hydrocarbon at a specific temperature to effect the formation of fiber, and treating the fiber in an inert gas at a temperature within the ordinary fiber-forming temperature zone. CONSTITUTION:A hydrocarbon such as benzene is introduced together with a carrier medium (preferably hydrogen gas, etc.) into a reaction system, and made to react by heating at 650-950 deg.C in the presence of a metal (compound) catalyst, and the produced carbon fiber is grown by the treatment with an inert gas such as N2 gas or a mixture of an inert gas and an active gas at 1,000-1,300 deg.C to obtain the objective fiber. The gas used in the growing process is preferably an inert gas or a mixture composed mainly of an inert gas. The metal (compound) catalyst is preferably a transition metal (compound) such as Fe, ferrocene, etc.
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