Characterization of the structural features of char from the pyrolysis of cane trash using Fourier transform-Raman spectroscopy

Daniel M. Keown, Xiaojiang Li, Jun Ichiro Hayashi, Chun Zhu Li

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Structural features of chars from the pyrolysis of cane trash in a fluidized-bed/fixed-bed reactor under both slow and fast heating rate conditions were investigated using Raman spectroscopy. Chars from the pyrolysis of coals were also investigated for comparison. Spectra were curve-fitted using 10 Gaussian bands representing different structural features of the chars. Differences in the total Raman intensity between cane trash chars and the chars of 3 coals of varying rank were great at low pyrolysis temperature (600 °C) but decreased as the pyrolysis temperature was increased to 900 °C. Both low (10 K min-1) and high (> 103-104 K s-1) particle heating rates resulted in increased aromatization and relative aromatic ring size with increasing pyrolysis temperature from 600 to 900 °C. However, pyrolysis at slow and fast heating rates gave chars of very different structural features as revealed by Raman spectroscopy.

Original languageEnglish
Pages (from-to)1816-1821
Number of pages6
JournalEnergy and Fuels
Issue number3
Publication statusPublished - May 1 2007
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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