Catalysis Letters, Vol.58, No.1, 47-51, 1999
High surface area MoO3/MgO: preparation by the new slurry impregnation method and activity in sulphided state in hydrodesulphurization of benzothiophene
High surface area MoO3/MgO was prepared by the reaction of MgO (250-300 m(2) g(-1)) with a slurry of ammonium heptamolybdate in methanol or anhydrous ethanol at the alcohol boiling point. The low solubility of ammonium heptamolybdate was sufficient for its gradual transport to the support surface: molybdena species were deposited and ammonia was evolved. Catalytic activities in the hydrodesulphurization of benzothiophene of the MoO3/MgO samples were comparable to the activity of the reference commercial MoO3/Al2O3 catalyst.
Keywords:SULFIDE HYDRODESULFURIZATION CATALYST;OXIDATIVEDEHYDROGENATION;MOLYBDENUM OXIDE;PROPANE;ALUMINA;SUPPORT;SELECTIVITY