METHOD OF SEPARATING FULLERENES

FIELD: substance separation techniques. SUBSTANCE: method is developed for isolating fullerenes C60, C70, and higher from fullerene-containing carbon black using liquid-phase chromatography technique. Main component of eluent is nonpolar aromatic solvent (toluene and/or benzene); solid carrier is co...

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Hauptverfasser:	VOL'FGANG MJULLER, RIKHARD BRELL, JOKHANN DAJMER, EHKKHARD VEBER, ROLAND MJULLER
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: substance separation techniques. SUBSTANCE: method is developed for isolating fullerenes C60, C70, and higher from fullerene-containing carbon black using liquid-phase chromatography technique. Main component of eluent is nonpolar aromatic solvent (toluene and/or benzene); solid carrier is coke, anthracite, and/or artificial graphite. Separation is carried out at 30 to 80 C. Yield of 99-100% pure C60 product is as high as 97%, and that of 94-98% pure C70 up to 57%. EFFECT: improved separation efficiency. 1 tblt