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Official Journal of the Japan Wood Research Society

Table 3 List of the Arrhenius’ activation energies (E a), Arrhenius’ frequency factors (A), and reaction rate constants (k) obtained in our previous reports [1, 2]

From: Effect of type of aromatic nucleus in lignin on the rate of the β-O-4 bond cleavage during alkaline pulping process

 

GG

GS

SG

SS

G′G

G′S

erythro

threo

erythro

threo

erythro

threo

erythro

threo

E aa

130

133

108

121

121

129

88.6

129

101

98.3

A b

294

166

2.33

16.4d

30.2

60.5

0.0108

127

0.0609

0.0576

k c

 130 °C

4.63

1.07

20.9

3.51

6.80

1.31

34.7

4.37

5.52

10.6

 140 °C

11.8

2.79

45.8

8.42

16.3

3.29

65.8

11.1

11.4

21.5

 150 °C

28.8

6.96

96.7

19.4

37.5

7.90

121

26.9d

22.8

42.1

 160 °C

67.4

16.7

197

42.8

82.9

18.2

217

62.6

44.2

80.2

 170 °C

152

38.4

389

91.5

177

40.5

378

140

83.1

148

  1. For GG, GS, SG, and SS [1], for G′G and G′S [2]
  2. aUnit: ×kJ mol−1
  3. bUnit: ×1012 min−1
  4. cUnit: ×10−3 min−1
  5. dThese data are different from those listed in the reference no. 1, where the wrong data were listed