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Issue
Korean Journal of Chemical Engineering,
Vol.12, No.5, 497-502, 1995
CHARACTERIZATION OF HYDRODESULFURIZATION CATALYST PREPARED BY IMPREGNATING COBALT NITRATE SOLUTION ONTO THE SULFIDED MoO3/Al2O3 CATALYST
Woo SI, Kim SI, Kim CH
CoMo/Al2O3 catalysts were prepared by impregnating Cobalt nitrate solution into oxidic or sulfided Mo/Al2O3. The properties of CoMo/Al2O3 catalysts were characterized by XRD, TPS, oxygen chemisorption and ESR. Catalytic activity of CoMo/Al2O3 catalyst was evaluated by thiophene HDS as a probe reaction. When CoMo/Al2O3 catalyst was prepared by impregnating Cobalt nitrate solution into sulfided Mo/Al2O3, the interaction between Mo and alumina became weaker and the formation of synergic phase was facilitated. These structural changes may explain higher HDS activity of CoMo/Al2O3 catalyst prepared by impregnating Cobalt nitrate solution into sulfided Mo/Al2O3.
Keywords: Hydrodesulfurization; CoMo/Al2O3; TPS; XRD; ESR
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