On-line catalytic upgrading of biomass fast pyrolysis products

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• 作者：Qiang Lu (1)
  XiFeng Zhu (1)
  WenZhi Li (1)
  Ying Zhang (1)
  DengYu Chen (1)
  
• 关键词：biomass ; fast pyrolysis ; catalytic cracking ; zeolites ; mesoporous catalysts
• 刊名：Chinese Science Bulletin
• 出版年：2009
• 出版时间：June 2009
• 年：2009
• 卷：54
• 期：11
• 页码：1941-1948
• 全文大小：740KB
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• 作者单位：Qiang Lu (1)
  XiFeng Zhu (1)
  WenZhi Li (1)
  Ying Zhang (1)
  DengYu Chen (1)
  
  1. Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, Hefei, 230026, China
  
• ISSN：1861-9541

文摘

Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was employed to achieve fast pyrolysis of biomass and on-line analysis of the pyrolysis vapors. Four biomass materials (poplar wood, fir wood, cotton straw and rice husk) were pyrolyzed to reveal the difference among their products. Moreover, catalytic cracking of the pyrolysis vapors from cotton straw was performed by using five catalysts, including two microporous zeolites (HZSM-5 and HY) and three mesoporous catalysts (ZrO2&TiO2, SBA-15 and Al/SBA-15). The results showed that the distribution of the pyrolytic products from the four materials differed a little from each other, while catalytic cracking could significantly alter the pyrolytic products. Those important primary pyrolytic products such as levoglucosan, hydroxyacetaldehyde and 1-hydroxy-2-propanone were decreased greatly after catalysis. The two microporous zeolites were effective to generate high yields of hydrocarbons, while the three mesoporous materials favored the formation of furan, furfural and other furan compounds, as well as acetic acid.