| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| coal gasification for hydrogen production | 1.12 | 0.4 | 9365 | 85 | 41 |
| coal | 0.65 | 0.3 | 6883 | 48 | 4 |
| gasification | 1.61 | 1 | 6903 | 13 | 12 |
| for | 0.22 | 0.5 | 6830 | 21 | 3 |
| hydrogen | 1.46 | 0.6 | 1503 | 74 | 8 |
| production | 0.95 | 0.5 | 474 | 51 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| coal gasification for hydrogen production | 0.39 | 0.4 | 6643 | 57 |
| hydrogen production from coal | 1.77 | 0.3 | 8528 | 45 |
| gasification for hydrogen production | 0.53 | 0.7 | 8620 | 60 |
| using coal to produce hydrogen | 1.24 | 0.6 | 5727 | 58 |
| coal to hydrogen conversion | 1.8 | 0.6 | 730 | 41 |
| coal to hydrogen plant | 1.32 | 0.3 | 1212 | 62 |
| convert coal to hydrogen | 0.06 | 0.5 | 2593 | 8 |
| the distribution of hydrogen in coals | 0.53 | 0.3 | 8190 | 15 |
| biomass gasification for hydrogen production | 1.67 | 1 | 6939 | 52 |
| gasification to produce hydrogen | 0.42 | 0.1 | 2715 | 34 |
| coal gasification process pdf | 1.91 | 0.2 | 5613 | 19 |
| gasification of coal process | 1.11 | 1 | 1209 | 97 |
| coal gasification with heated air | 0.39 | 0.5 | 5459 | 14 |
| coal combustion and gasification | 1.03 | 0.1 | 208 | 18 |
| how much hydrogen is in coal | 1.59 | 0.4 | 604 | 24 |
| what is coal gasification | 0.69 | 0.6 | 7221 | 67 |
| coal gasification and its applications | 0.58 | 0.3 | 3773 | 10 |
| in the coal-gasification project | 0.51 | 0.2 | 6953 | 90 |
