Table 2. Mass Composition of the Catalysts Characterized by the EDS Method.
| element
concentration/wt %a |
||||||||
|---|---|---|---|---|---|---|---|---|
| catalyst | theoretical Ni/(Ni + C) | actual Ni/(Ni + C) | actual O/(Ni + M) | Ni | M | C | O | P (for STR) |
| Ni/C-CR | 0.5 | 0.37 | 0.088 | 34.56 | - | 57.85 | 3.07 | – |
| Ni3Fe/C-CR | 0.5 | 0.39 | 0.25 | 31.57 | 9.13 | 48.64 | 10.27 | – |
| Ni3Co/C-CR | 0.5 | 0.42 | 0.092 | 32.27 | 13.14 | 44.08 | 4.20 | – |
| Ni3Cu/C-CR | 0.5 | 0.34 | 0.32 | 26.13 | 6.88 | 49.98 | 10.40 | – |
| Ni/C-STR | 0.5 | 0.43 | 0.16 | 37.11 | - | 49.02 | 6.96 | 4.79 |
| Ni3Fe/C-STR | 0.38 | 0.26 | 0.10 | 23.38 | 5.39 | 65.94 | 2.85 | 2.45 |
| Ni3Co/C-STR | 0.38 | 0.43 | 0.11 | 35.37 | 8.97 | 47.62 | 5.01 | 3.03 |
| Ni3Cu/C-STR | 0.38 | 0.38 | 0.03 | 31.84 | 12.11 | 51.06 | 1.17 | 3.82 |
a
The Kα line of B (0.185 eV) in the EDS spectra overlaps with the Kα line of C (0.277 eV).