| 摘要 |
A method for producing vapor-grown carbon fibers, comprising contacting a carbon compound with a catalyst and/or a catalyst precursor compound in a heating zone, wherein the carbon compound is a combination of compounds respectively selected from carbon compounds having no benzene ring structure within molecule [Group (a)] and from aromatic compounds [Group (b)], these compounds satisfy the conditions that, in the raw materials, (number of atoms of element as catalyst)/(number of all carbon atoms) & equals; 0.000005 to 0.0015 and [number of carbon atoms contained in compound of Group (a)]/[number of carbon atoms contained in compound of Group (a)+number of carbon atoms contained in compound of Group (b)] & equals; 0.001 to 0.9, and the residence time in the temperature region of 600° C. or more is 30 seconds or less.
|
