The Characteristics of Soot Formed in Premixed Flames by Different Fuels (original) (raw)
The internal structure of soot sampled from fuel-rich methane and benzene premixed flames burning in different temperature conditions was investigated. UV-visible spectroscopy was used for its sensitivity to the carbon network in terms of sp(2) and sp(3) sites and of extension of sp(2) aromatic moieties. The UV-visible absorption maximum and the optical band gap have shown to be affected by the fuel characteristics rather than by flame temperature. The important role of fuel aromaticity on soot internal structure from particle inception throughout the soot formation region was demonstrated.
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