| 摘要 |
PURPOSE:To obtain fibrous thermally decomposed carbon having specific properties, by thermally decomposing a mixed raw material gas of a carrier gas of hydrogen gas diluted with an inert gas and a hydrocarbon on a graphite substrate in the presence of SiS2 or H2S at a specific temperature. CONSTITUTION:A raw material gas of a carrier gas of hydrogen gas diluted with an inert gas such as argon or nitrogen and a hydrocarbon such as propylene or methane is brought into contact with the surface of clean graphite substrate in the presence of SiS2 or H2S at 1,100-1,500 deg.C and thermally decomposed to give the aimed carbon which is scaly microfibers and has >=20m<2>/g specific surface area and 3.35-3.50Angstrom lattice spacing d002 of graphite crystal. The gas concentration is preferably set in the ratio of 60-80vol.% hydrogen gas, 10-25vol.% inert gas, 1-30vol.% hydrocarbon, 1-10vol.% SiS2 and 1-10vol.% H2S. |
