SUPERCRITICAL-DIOXANE EXTRACTION OF TUNCBILEK LIGNITE |
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| Authors: | Bayram Demirci Aral Olcay |
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| Affiliation: | 1. Dept. of Chem., , ?n?nü University Faculty of Education , Malatya, Turkey;2. Chemical Eng. Dept., , Ankara University Faculty of Science , Ankara, Turkey;3. Dept. of Chem., , ?n?nü University Faculty of Education , Malatya, Turkey |
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| Abstract: | ABSTRACT After preextraction with ethanol-benzene (1:2) in a Soxhlet apparatus Tunçbilek lignite was extracted with dioxane at 330°C in an autoclave at different pressures and for different exposure times. The extracts were fractionated and many of the compounds they contain were identified by gas chromatography/mass spectrometry. The formation and yields of these compounds are discussed in terms of the structure of the parent fuel and the mechanism of extraction. |
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