Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 131, Issue -, Pages 93-100Publisher
ELSEVIER
DOI: 10.1016/j.jaap.2018.02.004
Keywords
Cellulose; Cellobiose; Glucose; Catalytic fast pyrolysis; Biofuels
Funding
- Doctoral Scientific Research Foundation of Shaanxi University of Science & Technology of China [2016BJ-31]
- National Natural Science Foundation of China [31370578]
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The catalytic fast pyrolysis of cellulose, cellobiose and glucose with the zeolite catalyst of NaY was carried out using thermogravimetric analyzer (TG) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Results from TG showed that all samples presented significant mass loss at low temperature and exhibited high residual chars with NaY. The activation energies of cellulose, cellobiose and glucose were significantly decreased with NaY. PY-GC/MS showed that saccharides were significantly decreased or even completely eliminated and converted into furans, aromatics, phenols and light oxygenates with NaY. The contents of furans of cellulose, cellobiose and glucose with NaY were increased from 17.48%, 18.79% and 28.77% to 46.71%, 52.11% and 67.81%, respectively. Pyrolysis of cellulose and cellobiose presented high selectivity of BTX (Benzene, Toluene, and Xylene). The furans are mainly formed on the surface of NaY by dehydration, fragmentation/retro-aldol condensation, decarbonylation, or decarboxylation. The pyrolysis intermediates of anhydro-oligosaccharides dominated the formation of aromatics and phenols during the catalytic fast pyrolysis of cellulose in the zeolite catalyst pores at the active sites.
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