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Table 5 Major pyrolysis products identified in chromatograms of cedar bio-oil produced at 500 °C and analytical cedar pyrolysis at 500 °C

From: Characterization of Japanese cedar bio-oil produced using a bench-scale auger pyrolyzer

Peak no. Compounds Area %
Bio-oil Analytical pyrolysis
1 Methane N.D. 1.90
2 Acetaldehyde 0.69 1.15
3 Methanol 5.30 1.99
4 Acetol 14.13 7.18
5 Glycolaldehyde 8.44 6.73
6 Acetic acid 12.05 4.80
7 Furfural 1.48 1.08
8 2(5H)Furanone 1.69 1.40
9 2-Hydroxy-2-cyclopenten-1-one 0.97 3.98
10 2-Hydroxy-3-methyl-2-cyclopenten-1-one 1.58 1.59
11 Guaiacol 3.85 5.11
12 4-Methylguaiacol 3.60 3.26
13 Phenol 0.88 0.54
14 4-Ethylguaiacol 0.74 1.03
15 Eugenol 1.14 1.56
16 4-Vinylguaiacol 0.26 6.06
17 Z-Isoeugenol 0.98 1.12
18 E-Isoeugenol 0.61 5.18
19 5-Hydroxymethylfurfural 1.26 0.82
20 Vanillin 1.77 1.39
21 Acetoguaiacone 0.70 0.63
22 Dihydroconiferylalcohol 0.67 1.68
23 Coniferylaldehyde 0.67 2.28
24 Coniferylalcohol N.D. 2.96
25 Levoglucosan 2.81 3.00