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Environmental Sciences Europe

Table 7 Organic compounds detected by gas chromatography/mass spectrometry in the bio-oil obtained from the pyrolysis of L. leucocephala

From: Optimizing pyrolysis parameters and product analysis of a fluidized bed pilot plant for Leucaena leucocephala biomass

Compound

L. leucocephala Pilot plant, bio-oil (500 °C)

Formula

MW

RT (min)

Area (%)

Butanedial

C4H6O2

86.09

10.860

3.32

Butanal

C5H8O

72.11

14.437

1.47

Aldehydes

   

4.79

 4-methylpyridine

C6H7N

93.13

12.565

0.84

 2-[(2-amino-4-methylpentanoyl)amino]acetic acid

C8H16N2O3

188.22

14.935

1.05

Nitrogen compounds

   

1.89

 1,4-dioxan-2-ol

C4H8O3

104.10

11.037

2.57

 (3,4,4-Trimethyldioxetan-3-yl)methanol

C6H12O3

132.16

15.148

2.16

Dioxins

   

4.73

 2H-Furan-5-one

C4H4O2

84.07

16.890

3.03

 3-Methyl-2H-furan-5-one

C5H6O2

98.10

21.319

1.19

 3-Methylfuran-2-carboxylic acid

C6H6O3

126.11

27.600

0.68

Furans

   

4.90

 (E)-But-2-enoic acid

C4H6O2

86.09

17.539

0.97

 4-Ethoxybutanoic acid

C6H12O3

132.16

27.315

1.13

Carboxylic acids

   

2.10

 But-1-en-2-ol

C4H8O

72.11

11.858

1.58

 3-Hydroxybutan-2-one

C4H8O2

88.11

22.297

0.83

Ketones

   

2.41

 1-({1-[(1-Methoxy-2-propanyl)oxy]-2-propanyl}oxy)-2-propanol

C10H22O4

206.28

12.027

0.92

 2-Ethoxyethanol

C4H10O2

90.12

13.054

3.10

 Ethane-1,2-diol

C2H6O2

62.07

19.439

1.62

 1-Ethoxypropan-2-ol

C5H12O2

104.15

24.034

0.98

 6-metHoxyhexan-2-ol

C7H16O2

132.20

24.100

2.04

 3,6,9,12-Tetraoxatetradecan-1,14-diol

C10H22O6

238.23

25.027

1.83

 Dodecaethylene glycol

C24H50O13

546.60

26.937

1.61

 1-Ethoxypropan-2-ol

C5H12O2

104.15

27.518

1.10

Ether alcohols

   

13.20

 2-(2-Oxocyclopent-3-en-1-yl)acetaldehyde

C7H8O2

124.14

13.356

2.25

 3-Methylcyclopent-2-en-1-one

C6H8O

96.13

18.720

3.22

 (2S)-2-Hydroxypropanoic acid

C3H6O3

90.08

19.836

0.85

 2-Cyclopenten-1-one,2-hydroxy-3-methyl

C6H8O2

112.13

20.780

1.67

 3-Methylcyclopentane-1,2-dione

C6H8O2

112.13

20.875

2.02

 3-Ethyl-2-hydroxycyclopent-2-en-1-one

C7H10O2

126.15

23.360

0.91

Cyclic ketones

   

10.92

 Phenol

C6H6O

94.11

21.510

2.21

 3-Methylphenol

C7H8O

108.14

22.077

2.57

 Benzene-1,2-diol

C6H6O2

110.11

25.290

1.67

 4-Methylbenzene-1,2-diol

C7H8O2

124.14

26.546

1.73

 1,3-Benzenediol-2-methyl

C7H8O2

124.14

27.150

1.48

 Benzene-1,3-diol

C6H6O2

110.11

28.183

1.76

 1-Phenylethanol

C8H10O

122.16

28.645

1.01

 4-Ethylbenzene-1,2-diol

C8H10O2

138.16

28.962

1.88

 4-Ethenylphenol

C8H8O

120.15

29.037

1.11

Aromatic compounds

   

15.42

 4-Methoxyphenol

C7H8O2

124.14

22.578

2.38

 2-Methoxy-4-methylphenol

C8H10O2

138.16

25.123

1.15

 2-Methoxybenzene-1,4-diol

C7H8O3

140.14

26.724

1.83

 2-Hydroxy-2-phenylacetic acid

C8H8O3

152.15

27.095

1.34

 2,6-Dimethoxyphenol

C8H10O3

154.16

28.427

1.94

 1-(3-Methoxy-4-propan-2-yloxyphenyl)propan-2-one

C13H18O3

222.28

31.759

1.07

Lignin-derived compounds

   

9.71

 (1R,2S,3S,4R,5R)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol

C6H10O5

150.17

25.643

1.25

Anhydrosugars

   

1.25

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