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Aromatics are important components in the tars from biomass gasification or in bio-oil from pyrolysis. This study investigated the formation of polycyclic aromatics during the thermal treatment of mallee wood at low temperature. The formation of tar was negligible below 200°C but became significant above 230°C. At the same time, the abundance of aromatics also became significant above 230°C. In addition,...
Raman spectroscopy has been widely used in the structural characterization of various carbonaceous materials. Through spectral deconvolution, FT-Raman spectroscopy has been used to gain insights into the transformation of char structure during gasification, providing new evidence to understand the char gasification mechanisms. These studies have mainly focused on the first-order Raman spectra in the...
This study aims to investigate the roles of char in the in situ destruction of tar during the volatile–char interactions. Rice straw and water/acid-washed rice straw samples were pyrolysed at 850°C with controlled extents of volatile–char interactions in a fluidised-bed/fixed-bed reactor. Our results indicate that the amount of tar decreases significantly with increasing extent of volatile–char interactions...
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