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| entry | starting material | preparation method | catalyst label |
|---|---|---|---|
| 1 | chitosan | aging with H3PO4 (50 wt %)-pyrolysis | C1-500 |
| 2 | chitin | aging with H3PO4 (50 wt %)-pyrolysis | C2-500 |
| 3 | chitosan | pyrolysis | C3-500 |
| 4 | chitin | pyrolysis | C4-500 |
| 5 | shrimp shell | pyrolysis | C5-500 |
