Peak No. RT (min) MW Compound
1 1.506 44 Carbon dioxide
2 1.993 60 Acetic acid
3 2.640-8.854 62 Ethylene glycol
4 3.756 92 Toluene
5 4.337 162 1,6-anhydro-beta-glucopyranose (levoglucosan)
6 4.931 96 Furfural
7 5.500 112 3-carboxyfurane
8 6.100 104 Ethylene glycol monoacetate
9 7.524   Styrene+carbohydrate derivaties
10 8.201 86 Butyrolactone
11 11.003 94 Phenol
12 11.181-3.353 106 Diethylene glycol
13 11.661 114 2-methyl-2-propen-1-ol acetate
14 13.460 108 2-methyl-phenol
15 14.190 116 2-methyl-butanoic acid
16 14.570 76 Propylene glycol
17 14.718 102 2-ethyl-1,3-dioxolane
18 14.843 102 2-ethyl-1,3-dioxolane
19 15.080 76 2-methoxy-ethanol
20 15.383 150 Triethylene glycol
21 15.407 126 3-ethyl-2-hydroxy-2-cyclopenten-1-one
22 16.042 206 2-(2-(2-methoxyethoxy)ethoxy)-acetate ethanol
23 16.172 132 Pentanedioic acid
24 16.499 102 Dipropyl ether
25 17.247 208 Tetraethyleneglycol monomethylether
26 17.537 88 3-pentanol
27 17.787   EG derivaties
28 18.279 174 Diisobutyl acetal
29 18.920 138 2-phenoxy-ethanol
30 19.306 194 Tetraethylene glycol
31 19.549 148 3-methyl-2(3H)-benzofuranone
32 19.828 116 2-methyl-3-hexanol
33 20.208 152 4-ethyl-2-methoxy-phenol
34 20.790 130 3-ethyl-4-hydroxy-dihydro-furan-2-one
35 21.336 102 Tetrahydro-2-furanmethanol
36 21.799 148 1,2,4-trimethoxy-butane
37 22.256 154 2,6-dimethoxy-phenol
38 22.642 166 2-methoxy-4-propyl-phenol
39 22.915 164 1-butyl-4-methoxy-benzene
40 23.710   Guaiacol etherified with EG
41 24.238 166 2-hydroxyethyl benzoate
42 24.761 168 4-methyl-syringol
43 24.915 206 2-methoxy-4-(1-propenyl)-(E)-phenol
44 25.443 146 2,2′-bi-1,3-dioxolane
45 26.245 220 Butylated hydroxytoluene
46 26.654 182 4-ethyl-syringol
47 27.046 180 4-vinyl-syringol
48 27.924   Syringol acid
49 28.476 194 4-prop-1-en-1-yl-syringol
50 28.636 196 4-propyl-syringol
51 29.076 200 1,4-dimethoxy-2,3,5,6-tetramethyl-benzene
52 30.803 194 4,6-dimethoxy-2,3-dimethyl-benzaldehyde
53 31.046 210 4-hydroxy-1,2-benzenedicarboxylic acid, dimethyl ester
54 31.562 182 2,2′-dimethylbiphenyl
Table 5: GC/MS analysis results for the oil fractions obtained in solvolytic liquefaction of EFB, without and in the presence of Fe2O3/FeOOH catalyst.