Table 3. Glycerol oxidation using AuPt supported on the perovskite and single oxide materials a .
| Catalyst | TOF b (h–1) | Selectivity
c
(%) |
|||
| Glyc d | Tar d | C–C scission d | Lac d | ||
| Perovskites | |||||
| AuPt/LaCrO3 | 620 | 5 | 7 | 2 | 86 |
| AuPt/LaMnO3 | 460 | 70 | 17 | 8 | 5 |
| AuPt/LaFeO3 | 440 | 10 | 2 | 19 | 69 |
| AuPt/LaCoO3 | 440 | 43 | 9 | 24 | 24 |
| AuPt/LaNiO3 | 560 | 30 | 3 | 26 | 41 |
| Corresponding single oxides | |||||
| AuPt/MnO2 | 560 | 33 | 3 | 33 | 31 |
| AuPt/Fe2O3 | 240 | 19 | 2 | 58 | 21 |
| AuPt/Co3O4 | 180 | 23 | 4 | 24 | 49 |
| AuPt/NiO | 700 | 30 | 10 | 39 | 21 |
aReaction conditions: glycerol 0.3 M in water, 4 : 1 NaOH : glycerol, glycerol : metal = 1000, 3 bar O2, 100 °C.
bTOF calculated at 30 min, moles of glycerol converted/moles of metal per h.
cSelectivity calculated after 6 h of reaction.
dKey: Glyc = glyceric acid, Tar = tartronic acid, C–C scission = C1 and C2 products, and Lac = lactic acid.