Pyrolysis of Suncheon-Bay wild reed over zeolite catalysts

The catalytic fast pyrolysis of wild reed was carried out over HZSM-5 zeolite catalysts with two different SiO2/Al2O3 ratios, 23 and 280. The effects of the pyrolysis temperature and catalyst on the bio-oil yield were examined using a laboratory-scale batch-type quartz reactor for the pyrolysis experiments over the temperature range, 440–560 °C. The highest bio-oil yield was obtained between 520 °C and 560 °C depending on the catalytic conditions. The bio-oil yields obtained from catalytic pyrolysis were generally lower than those obtained from non-catalytic pyrolysis because of the cracking of large-molecular-mass products into gaseous species. Further experiments were carried out using the pyrolysis-gas chromatography/mass spectrometry at 550 °C for the in-situ analysis of the species distribution of the product bio-oil. Regardless of the use of catalyst, oxygenates were the most abundant products from the pyrolysis of wild reed, followed by phenolics. The fraction of total oxygenates was reduced consid...

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