Development of new hydrodesulfurization NiMo catalysts supported on Al2O3-TiSBA-15 hybrid materials

作者：Morales Ortuno Julio C; Klimova Tatiana E^*

来源：Fuel, 2017, 198: 99-109.

DOI：10.1016/j.fuel.2017.01.007

• Hydrodesulfurization
• TiSBA-15
• Support effect
• NiMo catalysts
• Hybrid materials

In the present work, a series of NiMo catalysts supported on hybrid materials consisting of mesoporous TiSBA-15 and conventional gamma-alumina were prepared. Three hybrid supports were synthesized with 20, 40 and 60 wt.% of TiSBA-15 and compared to pure gamma-Al2O3 and TiSBA-15 counterparts. NiMo catalysts were prepared by incipient wetness co-impregnation of aqueous solutions of ammonium heptamolybdate and nickel nitrate precursors. Supports and catalysts were characterized by N-2 physisorption, XRD, UV- vis DRS, temperature programmed reduction (TPR) and ammonia TPD. The sulfided NiMo catalysts were characterized by HRTEM and evaluated in the simultaneous hydrodesulfurization of dibenzothiophene (DBT) and 4,6- dimethyldibenzothiophene ( 4,6- DMDBT). All NiMo catalysts supported on hybrid materials showed better dispersion of the catalytically active MoS2 phase than the reference catalyst supported on the conventional c- alumina material. Their activity was similar to that of the NiMo/gamma-Al2O3 catalyst in HDS of DBT, but substantially higher in HDS of 4,6- DMDBT.

• 出版日期2017-6-15