Production of biofuels from pine needle via catalytic fast pyrolysis over HBeta
The thermal and catalytic pyrolysis of pine needles over HBeta catalysts with different SiO 2 /Al 2 O 3 ratios (25 and 300) were investigated by thermogravimetric analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry. TGA showed that the main decomposition of pine needles occurred betwee...
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Published in | The Korean journal of chemical engineering Vol. 37; no. 3; pp. 493 - 496 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.03.2020
Springer Nature B.V 한국화학공학회 |
Subjects | |
Online Access | Get full text |
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Summary: | The thermal and catalytic pyrolysis of pine needles over HBeta catalysts with different SiO
2
/Al
2
O
3
ratios (25 and 300) were investigated by thermogravimetric analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry. TGA showed that the main decomposition of pine needles occurred between 150 and 550 °C. The catalytic DTG curves revealed the same decomposition temperature region as the non-catalytic TG curve of pine needles. Pyrolyzergas chromatography/mass spectrometry suggested that the effective catalytic conversion of pyrolyzate intermediates and other hydrocarbons to aromatic hydrocarbons can be achieved using HBeta catalysts at 600 °C. HBeta(25) produced a larger amount of aromatic hydrocarbons than HBeta(300) because of its higher acid amounts. By increasing the reaction temperature from 500 to 700 °C, the formation of benzene, toluene, ethylbenzene, xylenes (BTEXs) and other polycyclic aromatic hydrocarbons was increased with a concomitant decrease in phenolics and other oxygenates. The formation efficiency of BTEXs was increased further by increasing the catalyst loading. |
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ISSN: | 0256-1115 1975-7220 |
DOI: | 10.1007/s11814-019-0467-8 |