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

被引：16

作者：

Zhu X. ^{[1
]}

Lu Q. ^{[1
]}

Li W. ^{[1
]}

Zhang D. ^{[1
]}

机构：

[1] Biomass Clean Energy Laboratory, University of Science and Technology of China

来源：

Frontiers of Energy and Power Engineering in China | 2010年 / 4卷 / 3期

基金：

中国国家自然科学基金;

关键词：

catalytic pyrolysis; fast pyrolysis; HZSM-5; Py-GC/MS; xylan;

D O I：

10.1007/s11708-010-0015-z

中图分类号：

学科分类号：

摘要：

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. © 2010 Higher Education Press and Springer Berlin Heidelberg.

引用

页码：424 / 429

页数：5

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