Sample No. | Sorbent | Specific surface area | Pressure, Mpa | Sorption capacity | Irreversible adsorption | |
|
| M2・g−1 (on N2) |
| mmol・g−1 | mmol・g−1 | % of initial |
1 | Demetallized CNF | 173 | 0.12 | 0.116 | 0.075 | 64.2 |
|
|
| 0.51 | 0.284 | 0.131 | 46.2 |
|
|
| 1.03 | 0.58 | 0.175 | 30.1 |
2 | DTCNF | 236 | 0.11 | 0.18 | 0.053 | 29.4 |
| (method I) |
| 0.53 | 0.508 | 0.134 | 26.3 |
|
|
| 1.06 | 0.761 | 0.239 | 31.4 |
3 | TDCNF | 346 | 0.11 | 0.28 | 0.036 | 12.7 |
| (method II) |
| 0.52 | 1.438 | 0.145 | 10.1 |
|
|
| 1.05 | 1.58 | 0.32 | 20.2 |
4 | Carbon grade A | 690 | 0.12 | 1.294 | 0.561 | 43.3 |
|
|
| 0.58 | 3.509 | 1.36 | 38.9 |
|
|
| 1.01 | 4.214 | 1.813 | 43 |
5 | Sibunite | 350 | 0.11 | 0.179 | 0.018 | 9.9 |
|
|
| 0.51 | 0.696 | 0.054 | 7.7 |
|
|
| 1 | 0.973 | 0.128 | 13.1 |
6 | Silica gel | 333 | 0.12 | 0.494 | 0.011 | 2.2 |
|
|
| 0.51 | 0.919 | 0.049 | 5.3 |
|
|
| 1.03 | 1.357 | 0.138 | 10.2 |
7 | Aluminum oxide | 260 | 0.1 | 0.366 | 0.058 | 15.8 |
|
|
| 0.51 | 0.804 | 0.174 | 21.4 |
|
|
| 1.02 | 1.379 | 0.268 | 19.4 |