Pennisetum americanum pyrolysis behavior and mechanism were studied at a slow heating rate by thermogravimetric(TG) analysis coupled with fourier transform infrared spectroscopy (FTIR).The results showed that the decomposition of P. americanum mainly occurred at the temperature range of 220 to 500 ℃.The weight loss became quite slow when temperature further increased over 500 ℃ and the amount of residue finally decreased to 533 %. FTIR analysis showed that there were carbon dioxide, carbon monoxide, alkane, aldehydes,acids produced during the P. americanum pyrolysis process.Based on the TG curve and infrared spectra, P. americanum pyrolysis kinetic was studied. P. americanum pyrolysis process was divided into three stages, corresponding with 301.51, 88.39 and 330.58 kJ/mol for activation energy respectively.
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