Amorphous alumina-silica mixed oxides of various synthetic method supported NiMoS catalyst were investigated over the HDS reactivity and their characteristics in a dual catalytic bed with high pressure (5MPa) of pilot plant unit. The combination of LX6 and NMASA-2 was much more active than others, providing 6.6ppm S at 345°C which was attributed to their respective roles for rapid HDS of reactive and/or refractory sulfur species. ASA series supports were characterized by BET, XRD, SEM, HR-TEM and solid NMR. The adequate crystal size of alumina and octahedral coordination of Al species could be suggested to improve the HDS catalytic activity.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)