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Table 3 Select compounds identified in pyrograms obtained from biomass and lignin pyrolysis

From: Identification and thermochemical analysis of high-lignin feedstocks for biofuel and biochemical production

Compound Retention time (minutes) Source
Benzene 2.6 Lignin
Hydroxyacetaldehyde 2.8 Lignin + holocellulose
Acetic acid 3.0 Lignin + holocellulose
Toluene 3.4 to 3.5 Lignin
1-hydroxy-2-propanone 3.5 Lignin + holocellulose
Acetone 5.2 Lignin + holocellulose
Furfural 5.4 to 5.9 Lignin + holocellulose
2(5H)-furanone 7.9 Lignin + holocellulose
Phenol 8.9 to 9.1 Lignin
2-methoxyphenol 9.1 to 9.2 Lignin
2-methylphenol 9.4 to 9.5 Lignin
2,6-dimethylphenol 9.7 to 9.8 Lignin
4-methylphenol 10.1 to 10.5 Lignin
2-methoxy-4-methylphenol 10.7 to 11.2 Lignin
4-ethyl-2-methoxyphenol 11.8 to 12.1 Lignin
2-methoxy-4-vinylphenol 12.4 to 13.1 Lignin
2,6-dimethoxyphenol 13.2 to 13.6 Lignin
2-methoxy-4-(1-propenyl) phenol 14.2 Lignin
2-methoxy-4-(2-propenyl) phenol 12.6 Lignin
Vanillin 14.4 Lignin