Table 1. Physicochemical Properties of Calcined M-Doped and MCu-Doped Catalysts.
| sample | dXRDa (nm) | SSAb (m2 g–1) | Vpore (cm3 g–1) | dpore (nm) | MOxc (wt %) | M (mol %) | CuO (wt %) | Na2Oc (wt %) |
|---|---|---|---|---|---|---|---|---|
| HMd | 44 | 45 | 0.22 | 19.9 | 0 | 0 | 0 | 0.6 |
| Cr-HMd | 25 | 110 | 0.25 | 9.2 | 7.5 | 7.7 | 0 | 1.5 |
| CrCu-HMd | * | 132 | 0.20 | 6 | 8.4 | 8.7 | 3.1 | 0.7 |
| Al-HM | * | 140 | 0.26 | 7.4 | 5.3 | 8.0 | 0.0 | 1.0 |
| AlCu-HM | * | 168 | 0.26 | 6.1 | 5.2 | 7.8 | 3.0 | 0.6 |
| Ga-HM | 41 | 51 | 0.23 | 18 | 5.8 | 5.0 | 0.0 | 0.5 |
| GaCu-HM | * | 133 | 0.21 | 6.4 | 5.6 | 4.8 | 3.0 | 0.4 |
| In-HM | * | 124 | 0.24 | 7.8 | 12.7 | 7.6 | 0.0 | 0.8 |
| InCu-HM | * | 153 | 0.26 | 6.7 | 12.9 | 7.8 | 2.8 | 0.4 |
| Mn-HM | 17 | 105 | 0.22 | 8.4 | 8.4 | 8.4 | 0.0 | 0.4 |
| MnCu-HM | * | 153 | 0.27 | 7.1 | 8.3 | 8.3 | 2.9 | 0.2 |
| Zn-HM | 23 | 93 | 0.22 | 9.6 | 8.3 | 8.1 | 0.0 | 0.5 |
| ZnCu-HM | * | 137 | 0.21 | 6.1 | 8.6 | 8.4 | 2.9 | 0.1 |
| Nb-HM | * | 140 | 0.25 | 7.3 | 3.3 | 5.4 | 0.0 | 1.6 |
| NbCu-HM | * | 155 | 0.26 | 6.7 | 3.4 | 5.6 | 3.1 | 1.2 |
a
Calculated with the Scherrer equation from the α-Fe2O3 (110) reflection.
b
Specific surface area (SSA), pore volume (Vpore), and pore diameter (dpore) determined by the Brunauer–Emmett–Teller (BET) method.
c
Obtained by XRF analysis.
d
From ref (6).