Isolation and Characterization of the Higher Fullerenes from Carbon Soot

In the first phase of the process, the higher fullerenes, mainly C 76 and C 84 , as well as the basic fullerenes C 60 and C 70 , in a smaller amount, were Soxhlet extracted with pyridine from the sample of initial carbon soot, produced in electrical arc. The extract was obtained in increased, high y...

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Bibliographic Details
Published in:Fullerenes, nanotubes, and carbon nanostructures nanotubes, and carbon nanostructures, 2011-05, Vol.19 (4), p.309-316
Main Authors: Jovanovic, T., Koruga, DJ, Jovancicevic, B.
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Carbon
Chromatography
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fullerenes
Fullerenes and related materials
diamonds, graphite
higher fullerenes
Initial carbon soot
Materials science
Nanostructure
Physics
Pyridines
Solvents
Soot
soxhlet extraction
Specific materials
UV/VIS
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Summary:In the first phase of the process, the higher fullerenes, mainly C 76 and C 84 , as well as the basic fullerenes C 60 and C 70 , in a smaller amount, were Soxhlet extracted with pyridine from the sample of initial carbon soot, produced in electrical arc. The extract was obtained in increased, high yield of 16.4%, due to application of the original procedure. The solubility of fullerenes in this solvent was determined. Chromatographic separation of fullerenes from pyridine extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to pure toluene, on active Al 2 O 3 column, by a new, improved method. Identifications of fullerenes in the obtained chromatographically purified fractions and pyridine extract of the initial soot were performed using determined IR and UV/VIS techniques that have not been presented previously for the higher fullerenes.
ISSN:1536-383X
1536-4046
DOI:10.1080/15363831003721872