METHOD OF PRODUCING FULLERENE C Russian patent published in 2012 - IPC C01B31/02 B01D11/02 B01D15/08 B82B3/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in medicine, biology, nanoelectronics, when manufacturing optical devices, as well as in standardisation and metrology. An initial fullerene extract containing C₆₀, C₆₀O, C₇₀ C_76/78 and C₈₄ is enriched with fullerene C₆₀ to 96±2% via fractional concentration. The solution of the obtained concentrate then undergoes chromatographic purification on activated carbon in an aromatic solvent until achieving concentration of fullerene C₆₀ in the eluate of not less than 99.7%. The solid C₆₀-rich product is extracted from the eluate and then subjected to vacuum sublimation heat treatment at pressure 10^-2-10^-3 torr and temperature 700-800°C for 90±30 minutes.

EFFECT: obtaining with minimal losses fullerene C₆₀ with purity of 99,90-99,99%, ie, superhigh purity, which virtually does not contain oxide impurities, which can be seen on dwg 1.

3 tbl, 6 dwg