Journal
JOURNAL OF SUPERCRITICAL FLUIDS
Volume 83, Issue -, Pages 104-123Publisher
ELSEVIER
DOI: 10.1016/j.supflu.2013.09.001
Keywords
Biomass; Bio-oil; Thermochemical process; Supercritical liquefaction; Organic solvent; Ferula orientalis L.
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Funding
- Yuzuncu Yil University Research Fund
- [2013-FBE-D004]
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Ferule orientalis L stalks were liquefied in an autoclave in supercritical organic solvents (methanol, ethanol, 2-propanol, acetone and 2-butanol) with (NaOH, Na2CO3, ZnCl2) and without catalyst at five different temperatures ranging from 240 degrees C to 320 degrees C. The amounts of solid (unconverted raw material), liquid (bio-oil) and gas produced, as well as the composition of the resulting liquid phase, were determined. The effects of various parameters such as temperature, solvent, catalyst and ratio of catalyst on product yields were investigated. The results showed that conversion highly depends on the temperature and catalyst. The highest bio-oil yield (53.97%) was obtained using acetone with 10% zinc chloride at 300 degrees C. The liquid products were extracted with benzene and diethyl ether. Some of selected liquid products (bio-oils) were analyzed by elemental, FT-IR and GC-MS. 126 different compounds were identified by GC-MS in the liquid products obtained in ethanol at 300 degrees C. (C) 2013 Elsevier B.V. All rights reserved.
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