Table 3.
Amount of active sites (as determined from oxygen chemisorption), activities in HDS of 4,6-DMDBT [TOF initial reaction rate constants; (molecules of 4,6-DMDBT) (active sites in μmol g−1 as determined by oxygen chemisorption)−1 s−1] and selectivities in HDO of rapeseed oil (in %) at iso-conversion conditions [NiMo-OE (49.2%), NiMo-OW (51.7%), NiMo-IW (49.5%)].
| Catalyst | O2 adsorbed, μmol g−1 | HDS TOF × 109 | HDO S17 | HDO S18 | HDO Soxo | HDO Sester | HDO S18/S17 |
|---|---|---|---|---|---|---|---|
| NiMo-OE | 17.0 | 6.5 | 11.5 | 14.1 | 37.4 | 24.0 | 1.2 |
| NiMo-OW | 23.1 | 3.7 | 17.5 | 25.3 | 28.3 | 11.3 | 1.4 |
| NiMo-IW | 14.9 | 1.6 | 4.6 | 9.9 | 57.5 | 25.0 | 2.1 |