METHOD OF SEPARATION OF FULLERENES FROM SCHUNGITE Russian patent published in 2006 - IPC C01B31/02 

FIELD: chemical industry; methods of separation (extraction) of the natural and synthetic materials.

SUBSTANCE: the invention is pertaining to the field of chemical industry, to the methods of separation (extraction) of the natural and synthetic materials, in particular, to separation and purification of the most wide-spread fullerenes - C₆₀ and_{C70 from the natural fullerene-containing soot of schungite carbon. The purpose of the offered invention is to simplify the method of separation of fullerenes from schungite, to increase the amount of the treated raw, to decrease the power input costs in terms of the costs per a unit of weight of the target product. The substance of the invention is that the processes of extraction and crystallization are combined in one production cycle, that allows considerably to reduce the solvent concentration. The purpose in view is realized by extraction from the water-schungite suspension using the sulfur-carbon bisulfide solution and the subsequent crystallization purification of the near-surface volumes of the produced solution. Besides an increase of effectiveness of the extraction according to the offered method is achieved by an anodic pickling of the schungite powder and irradiation by short-range UDV-light of the water-schungite suspensions.}

EFFECT: the invention allows to simplify the method of separation of fullerenes from schungite, to increase the amount of the treated raw, to decrease the power input costs in terms of the costs per a unit of weight of the target product.

3 cl, 3 dwg, 6 dwg