Preparation of Mo Nitride Catalysts and Their Applications to the Hydrotreating of Indole and Benzothiophene

Do-Woan Kim; Dong-Keun Lee; Son-Ki Ihm

Korean Journal of Chemical Engineering, Vol.19, No.4, 587-592, July, 2002

DOI10.1007/BF02699300 Export Citation

Preparation of Mo Nitride Catalysts and Their Applications to the Hydrotreating of Indole and Benzothiophene

Do-Woan Kim, Dong-Keun Lee¹, and Son-Ki Ihm^†

Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Gusung-dong, Yusung-gu, Daejeon 305-701, Korea
¹Dept. of Chem. Eng., Res. Inst. Environ. Prot., Gyeonsang National University, 900 Gazwa-dong, Jinju 660-701, Korea

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Molybdenum nitrides were prepared by temperature-programmed reduction of MoO3 with flowing NH3. They were tested for indole HDN and benzothiophene HDS. Too low or high NH3 space velocity was inadequate to produce high surface area Mo nitride. The temperature ramping rate (except the rate higher than 2.5 K/min in β1 temperature range) hardly affected the surface area of the prepared samples. The XRD analysis suggested that MoO2 was the important intermediate for producing the high surface area Mo nitride. The catalytic conversions of Mo nitrides for indole HDN and benzothiophene HDS were well correlated with their surface areas. The reaction pathways of both reactions were proposed. The Mo nitride could be an effective catalyst without further hydrogenation of aromatics, thereby reducing the consumption of hydrogen.

Keywords:Mo Nitride;Indole HDN;Benzothiophene HDS;TPR with NH3;Mo Oxynitride

[References]

Abe H, Bell AT, Catal. Lett., 18, 1 (1993)
Choi JG, Brenner JR, Colling CW, Demczyk BG, Dunning JL, Thompson LT, Catal. Today, 15, 201 (1992)
Choi JG, Curl RL, Thompson LT, J. Catal., 146(1), 218 (1994)
Colling CW, Thompson LT, J. Catal., 146(1), 193 (1994)
Jaggers CH, Micheals JN, Stacy AM, Chem. Mater., 2, 150 (1990)
Markel EJ, VanZee JW, J. Catal., 126, 643 (1990)
Nagai M, Miyao T, Catal. Lett., 15, 105 (1992)
Oyama ST, Catal. Today, 15, 179 (1992)
Ranhotra GS, Haddix GW, Bell AT, Reimer JA, J. Catal., 108, 24 (1987)
Schlatter JC, Oyama ST, Ind. Eng. Chem. Res., 27, 1648 (1988)
Toth LE, "Transition Metal Carbides and Nitrides," Academic Press, New York (1971)
Volpe L, Boudart M, J. Phys. Chem., 90, 4874 (1986)
Volpe L, Boudart M, J. Solid State Chem., 59, 348 (1985)
Volpe L, Oyama ST, Boudart M, "Synthesis, Surface Reactiveity, and Catalytic Activity of High Surface Area Molybdenum Nitride Powder," in "Preparation of Catalysts III," Elsevier, Amsterdam, 147 (1983)
Wise RS, Markel EJ, J. Catal., 145(2), 344 (1994)

[Referenced By]

[Related Articles]

[1] Abe H, Bell AT, Catal. Lett., 18, 1 (1993)

[2] Choi JG, Brenner JR, Colling CW, Demczyk BG, Dunning JL, Thompson LT, Catal. Today, 15, 201 (1992)

[3] Choi JG, Curl RL, Thompson LT, J. Catal., 146(1), 218 (1994)

[4] Colling CW, Thompson LT, J. Catal., 146(1), 193 (1994)

[5] Jaggers CH, Micheals JN, Stacy AM, Chem. Mater., 2, 150 (1990)

[6] Markel EJ, VanZee JW, J. Catal., 126, 643 (1990)

[7] Nagai M, Miyao T, Catal. Lett., 15, 105 (1992)

[8] Oyama ST, Catal. Today, 15, 179 (1992)

[9] Ranhotra GS, Haddix GW, Bell AT, Reimer JA, J. Catal., 108, 24 (1987)

[10] Schlatter JC, Oyama ST, Ind. Eng. Chem. Res., 27, 1648 (1988)

[11] Toth LE, "Transition Metal Carbides and Nitrides," Academic Press, New York (1971)

[12] Volpe L, Boudart M, J. Phys. Chem., 90, 4874 (1986)

[13] Volpe L, Boudart M, J. Solid State Chem., 59, 348 (1985)

[14] Volpe L, Oyama ST, Boudart M, "Synthesis, Surface Reactiveity, and Catalytic Activity of High Surface Area Molybdenum Nitride Powder," in "Preparation of Catalysts III," Elsevier, Amsterdam, 147 (1983)

[15] Wise RS, Markel EJ, J. Catal., 145(2), 344 (1994)