Abstract
To understand in more detail the formation of polycyclic aromatic hydrocarbons (PAH) from complex fuels, we have performed pyrolysis experiments in a laminar-flow reactor, using the model fuel catechol (ortho-dihydroxybenzene), a phenol-type compound representative of structural entities in tobacco, coal, and wood. Catechol pyrolysis at temperatures of 700 to 1000 °C and residence times of 0.4 to 1 s produces a range of aromatic products, which have been analyzed by gas chromatography with flame-ionization detection and by high-pressure liquid chromatography with diode-array ultraviolet−visible absorption detection. Of the 64 aromatic products identified, yields are reported for the 30 species whose yields are at least 0.005% of the mass of fed catechol, over a significant temperature range. The quantified products fall into 8 structural categories: benzene, benzenoid PAH, indene benzologues, fluoranthene benzologues, cyclopenta-fused PAH, ethynyl-substituted aromatics, alkyl-substituted aromatics, and v...
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