TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
AU  - Simic-Krstic, J.
PY  - 2009
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/610
AB  - In the first phase of this work, the basic C60 and C70 as well as the higher fullerenes, mainly C76 and C84, were Soxhlet extracted with p-xylene and n-heptane from the samples of carbon soot, produced in electrical arc, yielding 5.9% and 0.7% of the extract, respectively. The remaining, p-xylene insoluble soot was then extracted with pyridine, by original advanced method, increasing the entire extract yield for an additional 5.9% to 11.8%. The procedures for increases of the basic and higher fullerenes yields, as well as for additional, selective extraction of the higher fullerenes were found. Chromatographic separation of the basic and the higher C76 and C84 fullerenes from p-xylene extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined, gradient of solvents from 5% toluene in hexane to pure 100% toluene, on active Al2O3 column, by a new, improved method. Identifications of the basic and the higher fullerenes in chromatographically purified fractions, as well as in the obtained extracts, were performed using determined techniques of IR and UV/VIS spectroscopy that have not been presented previously for the higher fullerenes.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Advancement of the Process for Extraction, Chromatography and Characterization of Fullerenes
VL  - 17
IS  - 2
SP  - 135
EP  - 150
DO  - 10.1080/15363830802671759
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir and Simic-Krstic, J.",
year = "2009",
abstract = "In the first phase of this work, the basic C60 and C70 as well as the higher fullerenes, mainly C76 and C84, were Soxhlet extracted with p-xylene and n-heptane from the samples of carbon soot, produced in electrical arc, yielding 5.9% and 0.7% of the extract, respectively. The remaining, p-xylene insoluble soot was then extracted with pyridine, by original advanced method, increasing the entire extract yield for an additional 5.9% to 11.8%. The procedures for increases of the basic and higher fullerenes yields, as well as for additional, selective extraction of the higher fullerenes were found. Chromatographic separation of the basic and the higher C76 and C84 fullerenes from p-xylene extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined, gradient of solvents from 5% toluene in hexane to pure 100% toluene, on active Al2O3 column, by a new, improved method. Identifications of the basic and the higher fullerenes in chromatographically purified fractions, as well as in the obtained extracts, were performed using determined techniques of IR and UV/VIS spectroscopy that have not been presented previously for the higher fullerenes.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Advancement of the Process for Extraction, Chromatography and Characterization of Fullerenes",
volume = "17",
number = "2",
pages = "135-150",
doi = "10.1080/15363830802671759"
}

Jovanović, T., Koruga, Đ., Jovančićević, B.,& Simic-Krstic, J.. (2009). Advancement of the Process for Extraction, Chromatography and Characterization of Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 17(2), 135-150.
https://doi.org/10.1080/15363830802671759

Jovanović T, Koruga Đ, Jovančićević B, Simic-Krstic J. Advancement of the Process for Extraction, Chromatography and Characterization of Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures. 2009;17(2):135-150.
doi:10.1080/15363830802671759 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, Simic-Krstic, J., "Advancement of the Process for Extraction, Chromatography and Characterization of Fullerenes" in Fullerenes Nanotubes and Carbon Nanostructures, 17, no. 2 (2009):135-150,
https://doi.org/10.1080/15363830802671759 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
AU  - Simic-Krstic, J
PY  - 2003
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/162
AB  - In the Bucky System II, based on electrical arc method, carbon soot was produced. Fullerenes C-60 and C-70 were Soxhlet extracted from the collected soot samples with toluene, chlorobenzene and with both of them successively, modifying the original methods. The yields of the both obtained toluene extracts were 5.4%. Chlorobenzene extract yield was 5.8%. After extraction of toluene insoluble soot with chlorobenzene, the entire extract yield was increased from 5.4% to 5.8%, due to modification of the existing methods. The difference of fullerenes solubilities in these solvents has been concluded. In the second part of our work toluene and chlorobenzene fullerenes extracts were separated by column chromatographics on active Al2O3, modifying the existing methods, by elution with hexane and mixtures of benzene, toluene, or xylene with hexane in determined ratios and orders. Identifications of buckminsterfullerene C-60 in the first chromatographically purified fractions were achieved by electron impact ionization (EI) mass, IR, and UV/VIS spectroscopy. The second and the third purified fullerene fractions, toluene and chlorobenzene soot extracts were characterized by IR and UV/VIS methods.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Modifications of fullerenes extractions and chromatographies with different solvents
VL  - 11
IS  - 4
SP  - 383
EP  - 394
DO  - 10.1081/FST-120025857
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir and Simic-Krstic, J",
year = "2003",
abstract = "In the Bucky System II, based on electrical arc method, carbon soot was produced. Fullerenes C-60 and C-70 were Soxhlet extracted from the collected soot samples with toluene, chlorobenzene and with both of them successively, modifying the original methods. The yields of the both obtained toluene extracts were 5.4%. Chlorobenzene extract yield was 5.8%. After extraction of toluene insoluble soot with chlorobenzene, the entire extract yield was increased from 5.4% to 5.8%, due to modification of the existing methods. The difference of fullerenes solubilities in these solvents has been concluded. In the second part of our work toluene and chlorobenzene fullerenes extracts were separated by column chromatographics on active Al2O3, modifying the existing methods, by elution with hexane and mixtures of benzene, toluene, or xylene with hexane in determined ratios and orders. Identifications of buckminsterfullerene C-60 in the first chromatographically purified fractions were achieved by electron impact ionization (EI) mass, IR, and UV/VIS spectroscopy. The second and the third purified fullerene fractions, toluene and chlorobenzene soot extracts were characterized by IR and UV/VIS methods.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Modifications of fullerenes extractions and chromatographies with different solvents",
volume = "11",
number = "4",
pages = "383-394",
doi = "10.1081/FST-120025857"
}

Jovanović, T., Koruga, Đ., Jovančićević, B.,& Simic-Krstic, J.. (2003). Modifications of fullerenes extractions and chromatographies with different solvents. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 11(4), 383-394.
https://doi.org/10.1081/FST-120025857

Jovanović T, Koruga Đ, Jovančićević B, Simic-Krstic J. Modifications of fullerenes extractions and chromatographies with different solvents. in Fullerenes Nanotubes and Carbon Nanostructures. 2003;11(4):383-394.
doi:10.1081/FST-120025857 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, Simic-Krstic, J, "Modifications of fullerenes extractions and chromatographies with different solvents" in Fullerenes Nanotubes and Carbon Nanostructures, 11, no. 4 (2003):383-394,
https://doi.org/10.1081/FST-120025857 . .