Electric-arc synthesis of soot with high content of higher fullerenes in parallel arc

Soot with a relatively high content of higher fullerenes (C 76 , C 78 , C 80 , C 82 , C 84 , C 86 , etc.) is synthesized in a parallel arc upon evaporation of pure carbon electrodes. The content of higher fullerenes in soot extract amounts to 13.8 wt % when two electrodes are simultaneously burnt in electric-arc reactor. Such a content is comparable with the content obtained upon evaporation of composite graphite electrodes with potassium carbonate impurity.