Asphaltenes and preasphaltenes from coal liquid extracts: feedstocks to obtain carbon mesophase
The aim of this work was to produce mesophase by using preasphaltenes and asphaltenes from coal liquid extracts obtained in a Direct Coal Liquefaction (DCL) process. Preasphaltenes and asphaltenes were carbonized at inert atmosphere at temperatures of 350, 400 and 450 °C during 1...
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| Format: | Artikel |
| Sprache: | English |
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Universidad de Antioquia
2014-02-01
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| Schriftenreihe: | Revista Facultad de Ingeniería Universidad de Antioquia |
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| Online Zugang: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/16169 |
| Zusammenfassung: | The aim of this work was to produce mesophase by using preasphaltenes and asphaltenes from coal liquid extracts obtained in a Direct Coal Liquefaction (DCL) process. Preasphaltenes and asphaltenes were carbonized at inert atmosphere at temperatures of 350, 400 and 450 °C during 180 min. The mesophase identification and quantification was performed by polarized light microscopy. The results showed that the highest concentration of mesophase (79% v/v), with mass yield of 12,4% w/w, was obtained from the asphaltenes treated at 400 °C. The highest mesophase global yield (with respect to coal fed) was 4,4% w/w.
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| ISSN: | 0120-6230 2422-2844 |