Table 2.
Specific surface area (SSA) and total pore volume (V), phase composition, and characteristics of the crystalline phases revealed (space group (S.G.), symmetry, lattice parameters (a, c), and mean crystallite size (DXRD)) for oxide supports and Ag/oxide catalysts.
| Sample | SSA, m2/g | V, cm3/g | Phase Composition | Structural Parameters | DXRD, nm | ||||
|---|---|---|---|---|---|---|---|---|---|
| Phase | wt.% | S.G. | Symmetry | a, Å | c, Å | ||||
| CeO2 | 40 | 0.14 | fluorite | 100 | Fm-3m | cubic | 5.405 | - | 13 |
| Ag/CeO2 | 34 | 0.13 | fluorite | 100 | Fm-3m | cubic | 5.405 | - | 15 |
| MnOx | 14 | 0.12 | Mn2O3 | 25 | Ia-3 | cubic | 9.402 | - | 61 |
| Mn3O4 | 75 | I41/amd | tetragonal | 5.758 | 9.457 | 33 | |||
| Ag/MnOx | 12 | 0.12 | Mn2O3 | 76 | Ia-3 | cubic | 9.403 | - | 52 |
| Mn3O4 | 24 | I41/amd | tetragonal | 5.755 | 9.466 | n.a. | |||
| CeMnOx | 51 | 0.22 | fluorite | 100 | Fm-3m | cubic | 5.406 | - | 7 |
| Ag/CeMnOx | 47 | 0.22 | fluorite | 100 | Fm-3m | cubic | 5.413 | - | 7 |