Pyrolysis of Lignocellulosic Materials. Phenolic Constituents of A Wood Pyrolytic Oil

Liquid pyrolytic products have been examined qualitatively and quantitatively for the presence of phenols. The liquid was solvent-extracted and examined by gas chromatography/mass spectrometry. The phenolic fraction contained phenol, o-cresol, guaiacol, m,p-cresol, 2,4-dimethylphenol, 4-meth-ylguaiacol, 4-ethylguaiacol, 4-propylguaiacol, eugenol, and isoeugenol. The total phenolic content was found to be 13.34% gravimetrically, but only 3.1% could be accounted for by chromatographic means, indicating the presence of a large proportion of nonvolatile, possibly polymeric material