| 摘要 |
PURPOSE: To obtain carbon fibrils having a cylindrical form, a large surface area, a high Young's modulus of elasticity and a high tensile strength, suitable for structural material for reinforcing and electrical conductivity enhancer or the like by bringing metal-containing particles into contact with a gaseous, carbon-containing compound at specific conditions. CONSTITUTION: The cylindrical carbon fibrils having 3.5-70 nm diameter and length greater than 10<2> times the diameter are produced by mixing metal- containing particles preferably particles containing a metal such as iron supported on an aluminum supporter or the like) and a gaseous, carbon- containing compound (preferably benzene or the like) in a ratio on a dry weight basis of metal-containing compound to carbon-containing particle of 1:100, by reacting the mixture in the existence of a compound (preferably CO2 or the like) generating a gaseous product by reaction with carbon, and preferably by heating with electromagnetic waves to 850-1,200 deg.C preferably under the atmospheric pressure. |
