CHARACTERIZATION OF HYDRODESULFURIZATION CATALYST PREPARED BY IMPREGNATING COBALT NITRATE SOLUTION ONTO THE SULFIDED MoO3/Al2O3 CATALYST

Woo SI; Kim SI; Kim CH

Korean Journal of Chemical Engineering, Vol.12, No.5, 497-502, November, 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

[References]

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[2] Arnoldy P, vandenHeijkant JAM, deBok GD, Moulijn JA, J. Catal., 96, 122 (1985)

[3] Bharduri M, Mitchell PCH, J. Catal., 77, 132 (1982)

[4] Bhaduri M, Hernandez J, Thomas WJ, Appl. Catal., 8, 85 (1983)

[5] Caceres CV, Fierro JLG, Blanco MN, Thomas HJ, Appl. Catal., 10, 333 (1984)

[6] Caceres CV, Fierro JLG, Agudo AL, Blanco MN, Thomas HJ, J. Catal., 95, 501 (1985)

[7] Candia R, Sorensen O, Villadsen J, Topsoe NY, Clausen BS, Topsoe H, Bull. Soc. Chim. Belg, 93, 763 (1984)

[8] Candia R, Topsoe H, Clausen BS, "Proc. of the 9th Iberinoamerica Symp. on Catalysts," Lisbon, Portugal, p. 211 (1984)

[9] Chung K, Massoth FE, J. Catal., 64, 320 (1980)

[10] Chung K, Massoth FE, J. Catal., 64, 332 (1980)

[11] deBeer VHJ, vansintFiet THM, vanderSteen GHAM, Zwaga AC, Schuit GCA, J. Catal., 35, 297 (1974)

[12] deBeer VHJ, Behelander C, vansintFiet THM, Werter PGAJ, Amberg CH, J. Catal., 43, 68 (1976)

[13] deBeer VHJ, vanderAalst MJM, Machiels CJ, Schuit GCA, J. Catal., 43, 78 (1976)

[14] Derouane EG, Pedersen E, Clausen BS, Gabelica Z, Candia R, Topsoe H, J. Catal., 99, 253 (1986)

[15] Duchet JC, vanOers EM, deBeer VHJ, Prins R, J. Catal., 80, 386 (1983)

[16] Gajardo P, Mathieux A, Grange P, Delmon B, Appl. Catal., 3, 347 (1982)

[17] Gates BC, Katzer JR, Schuit GCA, "Chemistry of Catalytic Processes," McGraw-Hill, New York (1979)

[18] Kim SI, Woo SI, Appl. Catal., 74, 109 (1991)

[19] Kim SI, Woo SI, Korean J. Chem. Eng., 8(3), 177 (1991)

[20] Kim SI, Woo SI, J. Catal., 133, 124 (1992)

[21] Konings AJA, Brentjens WLJ, Koningsberger DC, deBeer VHJ, J. Catal., 67, 145 (1981)

[22] Konings AJA, Valster A, deBeer VHJ, Prins R, J. Catal., 76, 466 (1982)

[23] LoJacono M, Verbeek JL, Schuit GCA, J. Catal., 29, 463 (1973)

[24] Okamoto Y, Ohhara M, Maezawa A, Imanaka T, Teranishi S, J. Phys. Chem., 90, 2396 (1986)

[25] Oliver SW, Smith TD, Pilbrow JR, Pratt KC, Christov V, J. Catal., 111, 88 (1988)

[26] Pollack SS, Makovsky LE, Brown FR, J. Catal., 59, 452 (1979)

[27] Scheffer B, Arnoldy P, Moulijn JA, J. Catal., 112, 516 (1988)

[28] Schrader GL, Cheng CP, J. Catal., 80, 369 (1983)

[29] Stuchly V, Zahradnikova H, Beranek I, Appl. Catal., 35, 23 (1987)

[30] 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)