Studies of the Hydrocracking of Lignin. II. The Components of Lignin Hydrocracking Products

The components of the hydrocracking products of alcohol-fermented softwood sulfite waste lignin were identified by rectification, gas chromatography, and IR spectrophotometry. In the acidic fraction (b. p. 170–232°C phenol, o-cresol, 2,6-xylenol, m-cresol, p-cresol, 2-ethylphenol, 2, 4-xylenol, 2, 5-xylenol, 4-ethylphenol, 3-ethylphenol, 3, 5-xylenol, 2-(n-propyl)phenol, 3, 4-xylenol, 4-(n-propyl) phenol and 3-(n-propyl) phenol were identified. In the neutral fraction (b. p. 170–232°C) naphthalene, 2-methylnaphthalene, and tetralin were identified. In the fraction (b. p. 135–170°C) ethylbenzene, m-xylene, p-xylene, o-xylene, and N-propylbenzene were found. In the fraction boiling between 57 and 135°C toluene was identified.