Optimizing Conditions for Ultrasound Extraction of Fullerenes from Coal Matrices
| Autor: | Věra Hamplová, Petr Vítek, Zbyněk Boháček, Z Pokorná, Otakar Frank, Libor Juha, Jan Jehlička |
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| Rok vydání: | 2009 |
| Předmět: |
Chromatography
Materials science business.industry Sonication Organic Chemistry Extraction (chemistry) High-performance liquid chromatography Toluene Atomic and Molecular Physics and Optics Pentane Demineralization chemistry.chemical_compound chemistry Yield (chemistry) General Materials Science Coal Physical and Theoretical Chemistry business |
| Zdroj: | Fullerenes, Nanotubes and Carbon Nanostructures. 17:109-122 |
| ISSN: | 1536-4046 1536-383X |
| DOI: | 10.1080/15363830802671684 |
| Popis: | Conditions for ultrasound toluene extraction of synthetic C60 added to powdered bituminous coal were tested. High‐performance liquid chromatography (HPLC) was used to determine the fullerene content in the obtained extracts. The results indicated a possible negative effect of sample demineralization (HCl/HF) and N2 purging on the extraction yield of C60. On the contrary, a 30% yield increase was registered when the coal was pre‐extracted with pentane or pentane/toluene. The best conditions for C60 recovery in the investigated mixtures are 30 min of sonication at 280–285 K. The effects of sample filtration, sequential extraction, ultrasound bath power and treatments of C60 solution alone are also discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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