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| molar content of carbon structure under various conditions (%) | C–C, C=C | C–H | C–O | C=O, O–C–O | COO |
|---|---|---|---|---|---|
| raw coal | 63.4 | 20.0 | 9.1 | 1.9 | 5.5 |
| 1.1 | 60.1 | 25.7 | 10.3 | 1.8 | 2.0 |
| 1.2 | 65.2 | 21.8 | 7.5 | 2.3 | 3.2 |
| 1.3 | 64.1 | 22.9 | 7.1 | 2.5 | 3.4 |
| 2.1 | 66.7 | 21.7 | 8.0 | 1.2 | 2.4 |
| 2.2 | 64.5 | 22.0 | 8.0 | 2.4 | 3.0 |
| 2.3 | 61.1 | 23.4 | 10.3 | 2.4 | 2.8 |
