Oxidation states and surface atomic ratio of monometallic and bimetallic catalysts.
| Catalysts | Oxidation states | Surface atomic ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Zr4+ (3d5/2) | Ce % (3d5/2) | Ag % (3d5/2) | Au% (4f7/2) | ||||||||
| Ce4+ | Ce3+ | Ag0 | Ag+ | Au0 | Au+ | O/Ce | O/Ag | O/(Au + Ag) | Au/Ag | ||
| AgZr | 182.08 | — | — | 100 | — | — | — | — | 9.48 | — | — |
| AgZrCe10 | 182.06 | 70 | 30 | 77 | 23 | — | — | 0.83 | 7.68 | — | — |
| AgZrCe20 | 181.96 | 69 | 31 | 62 | 38 | — | — | 0.91 | 8.49 | — | — |
| AuZr | 182.15 | — | — | 100 | — | — | — | — | |||
| AuZrCe10 | 182.03 | 67 | 33 | 100 | — | 0.81 | — | — | |||
| AuZrCe20 | 181.89 | 66 | 34 | 100 | — | 0.77 | — | — | |||
| AgAuZr | 182.33 | — | — | 100 | — | 100 | — | — | — | 13.74 | 0.80 |
| AgAuZrCe10 | 182.19 | 59 | 41 | 54 | 46 | 100 | — | 0.67 | — | 7.25 | 0.90 |
| AgAuZrCe20 | 181.26 | 57 | 43 | 50 | 50 | 100 | — | 0.61 | — | 6.93 | 0.92 |