M. Kudsy et al., PYROLYSIS OF KRAFT LIGNIN IN MOLTEN ZNCL2-KCL MEDIA WITH TETRALIN VAPOR ADDITION, Canadian journal of chemical engineering, 73(3), 1995, pp. 411-415
Kraft lignin was pyrolyzed in molten salt media of ZnCl2-KCl mixture w
ith tetralin vapor added in 0.4 and 4 mol% diluted with N-2 in the tem
perature range of 400 to 700 degrees C. The gas chromatographic analys
es of pyrolysis products revealed that the yield of H-2 was not increa
sed by tetralin vapor addition. This fact implies that the hydrogen ra
dical produced from tetralin is consumed in the formation of phenolic
compounds and light liquids but not in the formation of H-2. p-Cresol
was the most abundant phenolic compound. The yield of total phenolic c
ompounds with 4 mol% tetralin vapor added was increased by ca. 80% as
compared to that in neat pyrolysis of Kraft lignin.