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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 List of prepared reaction solutions in this study

From: Synergistic contribution of hydrosulfide and carbonate anions to the β-O-4 bond cleavage of lignin model compounds in a green liquor pretreatment for enzymatic hydrolysis of lignocellulosic materials

Solutioana

Concentration (mol/L)b

Initial pH

Na2CO3

NaOH

NaSH

1

0.215

0

0

11.4

2

0.172

0.0430

0

12.7

3

0.172

0.0430

0.0430

12.7

4

0

0.00631

0

11.8

5

0

0

0.430

11.8

6

0.172

0

0.0860

11.4

7

0

0

0

5.9

  1. aSolutions 1, 2, and 3 contained the same titratable alkali, while the pH values were similar in solutions 1, 4, 5, and 6. Solution 7 was a blank run
  2. bThese are not the actual concentrations but those calculated from the amount of the reagents added
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