| 摘要 |
PROBLEM TO BE SOLVED: To simply, efficiently and stably produce the subject material useful for a catalyst, etc., from an inexpensive raw material by shaping a specific heavy oil or a pitch as a starting raw material, then extracting the shaped heavy oil or pitch with an organic solvent, providing a high-softening point pitch and infusibilizing the resultant pitch and then baking and carbonizing the infusibilized pitch. SOLUTION: (A) A heavy oil at 0.8-1.2 atomic ratio H/C without containing (Z) a substance insoluble in an aromatic solvent such as benzene, toluene, xylene or ethylbenzene or (A2 ) a low-softening point pitch, obtained by distilling away a light component from the heavy oil (A) and having <=150 deg.C softening point (Ts ) measured by a temperature gradient method is used as a starting raw material and then shaped into a particulate, a granular or a fibrous shape having <=100μm diameter. The light component is then extracted with an organic solvent capable of leaving >=10wt.% thereof as an insoluble matter to provide a high-softening point pitch having >=180 deg.C Ts and <=5wt.% heating loss up to 300 deg.C without containing the insoluble substance (Z). The infusibilizing treatment of the obtained pitch is subsequently carried out in an atmosphere containing oxygen and then baked and carbonized in an inert atmosphere. |
