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Fast and catalytic pyrolysis of xylan: Effects of temperature and M/HZSM-5 (M = Fe, Zn) catalysts on pyrolytic products

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Abstract

Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was employed to achieve fast pyrolysis of xylan and on-line analysis of pyrolysis vapors. Tests were conducted to investigate the effects of temperature on pyrolytic products, and to reveal the effect of HZSM-5 and M/HZSM-5 (M = Fe, Zn) zeolites on pyrolysis vapors. The results showed that the total yield of pyrolytic products first increased and then decreased with the increase of temperature from 350°C to 900°C. The pyrolytic products were complex, and the most abundant products included hydroxyacetaldehyde, acetic acid, 1-hydroxy-2-propanone, 1-hydroxy-2-butanone and furfural. Catalytic cracking of pyrolysis vapors with HZSM-5 and M/HZSM-5 (M = Fe, Zn) catalysts significantly altered the product distribution. Oxygen-containing compounds were reduced considerably, and meanwhile, a lot of hydrocarbons, mainly toluene and xylenes, were formed. M/HZSM-5 catalysts were more effective than HZSM-5 in reducing the oxygen-containing compounds, and therefore, they helped to produce higher contents of hydrocarbons than HZSM-5.

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Authors and Affiliations

  1. Biomass Clean Energy Laboratory, University of Science and Technology of China, Hefei, 230026, China

    Xifeng Zhu, Qiang Lu, Wenzhi Li & Dong Zhang

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  1. Xifeng Zhu
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  2. Qiang Lu
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  3. Wenzhi Li
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  4. Dong Zhang
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Correspondence to Xifeng Zhu.

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Zhu, X., Lu, Q., Li, W. et al. Fast and catalytic pyrolysis of xylan: Effects of temperature and M/HZSM-5 (M = Fe, Zn) catalysts on pyrolytic products. Front. Energy Power Eng. China 4, 424–429 (2010). https://doi.org/10.1007/s11708-010-0015-z

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  • DOI: https://doi.org/10.1007/s11708-010-0015-z

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