METHOD OF PRODUCING MIXTURE OF FULLERENOLS Russian patent published in 2013 - IPC C01B31/02 B82B3/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry. Fullerene-containing soot is mixed with a liquid which reacts with fullerenes in the soot, e.g. with an aqueous alkali solution with concentration of at least 0.5 wt % selected from KOH, NaOH, Ba(OH)₂ and/or hydrogen peroxide H₂O₂, with ratio thereof to soot of 1:(20-300) ml/g. The obtained mixture is mixed with a solution of a catalyst for hydroxylation of fullerenes - tetrabutylammonium hydroxide with concentration of 5-20 wt % in volume ratio to the mixture of 1:(100-400). After mixing, the mixture is filtered to separate spent soot from the obtained solution, in which a salting out agent is added, e.g. methanol CH₂OH, or a mixture of propanol n-C₃H₇OH, diethyl ether C₂H₅OC₂H₅ and n hexane C₆H₆. The mixture of fullerenols precipitates, and the precipitate is washed in a Soxhlet apparatus, after which the dry mixture of fullerenols is separated.

EFFECT: invention simplifies and reduces the cost of the process, increases safety by excluding aromatic solvents.

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