Table 2.
Elemental composition and chemical speciation of catalysts.
| C 1 s % | O 1 s % | N 1 s % | Metal % | C gr | C-N | CxOy | |
|---|---|---|---|---|---|---|---|
| Fe-AAPyr | 84.8 | 7.2 | 7.9 | 0.25 | 32.7 | 13.5 | 51.3 |
| Co-AAPyr | 89.5 | 8.1 | 2.3 | 0.10 | 50.6 | 6.4 | 40.5 |
| Ni-AAPyr | 86.3 | 11.6 | 2.0 | 0.19 | 29.7 | 17.7 | 43.3 |
| Mn-AAPyr | 82.3 | 12.5 | 5.1 | 0.13 | 25.0 | 16.1 | 51.6 |
| N pyridinic | Nx-M | N pyrrolic | N gr | Metal | M-Nx | MOx | |
|---|---|---|---|---|---|---|---|
| Fe-AAPyr | 35.9 | 19.6 | 25.3 | 9.5 | 0.0 | 28.0 | 72.0 |
| Co-AAPyr | 27.3 | 12.9 | 30.3 | 14.7 | 11.4 | 58.4 | 30.2 |
| Ni-AAPyr | 34.7 | 13.2 | 28.3 | 9.7 | 0.0 | 16.8 | 83.2 |
| Mn-AAPyr | 35.8 | 31.5 | 17.1 | 6.4 | 17.8 | 34.4 | 47.8 |