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CHARACTERIZATION OF HYDRODESULFURIZATION CATALYST PREPARED BY IMPREGNATING COBALT NITRATE SOLUTION ONTO THE SULFIDED MoO3/Al2O3 CATALYST
Korean Journal of Chemical Engineering, November 1995, 12(5), 497-502(6), 10.1007/BF02705850
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Abstract
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.
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References
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deBeer VHJ, vansintFiet THM, vanderSteen GHAM, Zwaga AC, Schuit GCA, J. Catal., 35, 297 (1974)
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Derouane EG, Pedersen E, Clausen BS, Gabelica Z, Candia R, Topsoe H, J. Catal., 99, 253 (1986)
Duchet JC, vanOers EM, deBeer VHJ, Prins R, J. Catal., 80, 386 (1983)
Gajardo P, Mathieux A, Grange P, Delmon B, Appl. Catal., 3, 347 (1982)
Gates BC, Katzer JR, Schuit GCA, "Chemistry of Catalytic Processes," McGraw-Hill, New York (1979)
Kim SI, Woo SI, Appl. Catal., 74, 109 (1991)
Kim SI, Woo SI, Korean J. Chem. Eng., 8(3), 177 (1991)
Kim SI, Woo SI, J. Catal., 133, 124 (1992)
Konings AJA, Brentjens WLJ, Koningsberger DC, deBeer VHJ, J. Catal., 67, 145 (1981)
Konings AJA, Valster A, deBeer VHJ, Prins R, J. Catal., 76, 466 (1982)
LoJacono M, Verbeek JL, Schuit GCA, J. Catal., 29, 463 (1973)
Okamoto Y, Ohhara M, Maezawa A, Imanaka T, Teranishi S, J. Phys. Chem., 90, 2396 (1986)
Oliver SW, Smith TD, Pilbrow JR, Pratt KC, Christov V, J. Catal., 111, 88 (1988)
Pollack SS, Makovsky LE, Brown FR, J. Catal., 59, 452 (1979)
Scheffer B, Arnoldy P, Moulijn JA, J. Catal., 112, 516 (1988)
Schrader GL, Cheng CP, J. Catal., 80, 369 (1983)
Stuchly V, Zahradnikova H, Beranek I, Appl. Catal., 35, 23 (1987)
Yoshimura Y, Furimsky FE, Sato T, Shimada H, Matsubayashi N, Nishijima A, "Proc. of the 9th International Congress on Catalysis," Calgary, Canada, p. 136 (1988)
