METHOD OF PRODUCTION OF $$$ AND $$$ FULLERENES AND REACTOR FOR PRODUCTION OF FULLERENE BLACK Russian patent published in 2005 - IPC

FIELD: pharmacology.

SUBSTANCE: proposed method includes evacuation of hermetic chamber 1 and filling it with helium. Then voltage is supplied to cathode 4 and anode 5 located respectively in cathode lead-in 2 and anode lead-in 3. Cathode lead-in 2 moves in longitudinal direction and anode lead-in 3 is immovable. After burning of anode 5, its replacement is performed automatically from rod loader 11. Anode 5 and cathode 4 are enclosed in metal casing 6 with open ends; it is mounted coaxially relative to electrodes. Casing 6 is turnable and its longitudinal axis coincides with axis of upper flange 7 and lower flange 8. Upper flange 7 is provided with axle with piston 9 for forcing fullerene-containing black to storage chamber 10 mounted on lower flange 8. Black thus obtained is subjected to treatment in Soxlet apparatus with aromatic solvent-toluene. To this end, use is made of excessive amount of black relative to saturated solution of mixture of fullerenes in toluene. Extract containing up to 95% of C₆₀ settles on hot bottom of apparatus. Solution above sediment is enriched with C₇₀ up to 70%. Then fullerence C₆₀ and C₇₀ are separated independently and in parallel in chromatographic columns with use of activated charcoal as immovable phase. Toluene or chlorobenzene is used as movable phase. Target product is crystallized and is additionally cleaned by re-crystallization or sublimation in vacuum, thus obtaining C₆₀ at purity of 99.9% and C₇₀ at purity of 99.5%.

EFFECT: enhanced reliability and facilitated procedure of method.

4 cl, 1 dwg