Hydrotreating activity of bulk NiB alloy in model reaction of hydrodenitrogenation of carbazole

- Stability of NiB alloy in hydrodenitrogenation of carbazole after 5 days runs in the presence or not of 4,6-DMDBT.
- Sulphur resistance of NiB alloy during HDN/HDS: only partially sulfidation.
- Presence of Ni0 on surface of NiB catalyst after HDN reaction.
- Presence of Ni0, Ni3B and Ni3S2 on surface of NiB catalyst after HDN/HDS reaction.