| 摘要 |
PROBLEM TO BE SOLVED: To provide a catalyst composition, in which catalyst particles are arranged to be separately scattered on a carbon based supporting body, and a manufacturing method thereof and a manufacturing method capable easily manufacturing high purity carbon nanofiber. SOLUTION: The catalyst composition is composed of the catalyst metal particle 1 having the surface covered with carbon 3 and nano-structured carbon 2 dispersed on the surroundings. The catalyst metal particle is at least one kind selected from Ti, Zr, Fe, Co, Ni and Y. The nano-structural carbon 2 is the carbon nanofiber. The catalyst composition is produced by vaporizing the catalyst metal and the carbon material and rapidly quenching. The vaporization is performed by arc discharge. The catalyst composition is placed on a carbon substrate 21 and is exposed in an oxidizing atmosphere to remove the carbon 3 and the nano-structural carbon 2 by oxidation. A gaseous mixture of hydrogen with hydrocarbon is passed through the carbon substrate 21 supporting the catalyst metal particle 1 to form the carbon nanofiber. |
