Table 2 Recovery of WIS, glucan and xylan as percentage of the theoretical value, and the content of lignin in the WIS
Catalyst | Temp (°C) | Time (min) | WIS (%) | Glucan (%) | Xylan (%) | Lignin* (%) | ||
|---|---|---|---|---|---|---|---|---|
WIS | Hydrolysate | WIS | Hydrolysate | |||||
None | 190 | 5 | 79.8 | 111.0 | 8.9 | 84.6 | 26.8 | 22.6 |
200 | 5 | 53.3 | 76.4 | 7.9 | 29.1 | 40.6 | 27.5 | |
210 | 5 | 62.9 | 106.3 | 7.2 | 21.4 | 36.9 | 28.1 | |
190 | 10 | 66.8 | 98.8 | 7.6 | 50.0 | 41.6 | 24.6 | |
200 | 10 | 60.6 | 96.5 | 7.6 | 13.0 | 40.3 | 29.2 | |
210 | 10 | 56.4 | 92.9 | 5.7 | 11.2 | 16.0 | 36.0 | |
0.2% Sulphuric acid | 190 | 5 | 70.1 | 97.2 | 7.5 | 32.0 | 60.6 | 27.1 |
200 | 5 | 67.3 | 101.2 | 6.8 | 22.9 | 65.8 | 28.9 | |
210 | 5 | 65.9 | 105.2 | 6.3 | 13.8 | 53.1 | 33.0 | |
190 | 10 | 58.9 | 86.5 | 7.9 | 21.1 | 69.9 | 28.5 | |
200 | 10 | 65.2 | 104.3 | 6.7 | 14.9 | 42.6 | 27.6 | |
210 | 10 | 66.9 | 91.8 | 4.6 | 8.9 | 21.1 | 29.4 | |
0.5% Sulphuric acid | 190 | 5 | 59.9 | 97.6 | 4.2 | 8.5 | 40.2 | 27.2 |
200 | 5 | 59.0 | 97.5 | 4.6 | 6.1 | 35.0 | 27.0 | |
210 | 5 | 62.8 | 106.4 | 4.4 | 4.4 | 25.6 | 28.7 | |
190 | 10 | 59.7 | 97.3 | 4.3 | 7.3 | 32.8 | 28.9 | |
200 | 10 | 62.9 | 105.1 | 3.9 | 6.2 | 24.1 | 28.1 | |
210 | 10 | 58.5 | 100.2 | 3.8 | 3.2 | 13.6 | 30.3 | |