Elemental composition of the obtained Zn–Fe DMC catalysts in terms of mass fractions.
| Entry | Catalyst | IL | C (wt%) | H (wt%) | N (wt%) |
|---|---|---|---|---|---|
| 1 | DMC-Blank | — | 21.99 | 3.92 | 16.63 |
| 2 | DMC-PF6 | BMIMPF6 | 13.69 | 1.95 | 12.24 |
| 3 | DMC-BF4 | BMIMBF4 | 9.21 | 2.69 | 8.41 |
| 4 | DMC-Br | BMIMBr | 19.18 | 3.13 | 13.96 |
| 5 | DMC-Cl | BMIMCl | 17.60 | 3.68 | 13.35 |