METAL-CATALYZED GASIFICATION OF CARBON

Nam YW; Lee JS

Korean Journal of Chemical Engineering, Vol.12, No.4, 466-471, September, 1995

The catalytic hydrogenolysis(gasification) of carbon by dihydrogen in the presence of molybdenum carbide and platinum has been studied around 900 K. As indicated by X-ray absorption, the catalytic phases during the reaction were stable molybdenum carbide or slightly electron-deficient platinum. The rates of hydrogenolysis with molybdenum carbide were only slightly less than those with platinum, one of the most active metals for the reaction. However, these two types of catalyst showed different kinetic parameters and different behavior of catalyst particles during the reaction.

Keywords:Hydrogenolysis of Carbon;Molybdenum Carbide;Platinum-Carbon Bond;XAS;EXAFS

[References]

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[1] Anderson RB, Emett PH, J. Phys. Chem., 56, 753 (1952)

[2] Baker RTK, Sherwood RD, Dumesic JA, J. Catal., 66, 56 (1980)

[3] Bliznakov GM, Kiskiniva MP, Surnev LN, J. Catal., 81, 1 (1983)

[4] Boudart M, Aldag AW, Vannice MA, J. Catal., 18, 46 (1970)

[5] Boudart M, Lee JS, Oyama ST, J. Catal., 106, 125 (1987)

[6] Choi SH, "XAFS Studies of Molybdenum-Containing Bimetallic Catalysts," M.S. Dissertation, Pohang University of Science and Technology (1995)

[7] Cramer SP, Eccles TK, Kutzler FW, Hodgson KO, Mortenson LE, J. Am. Chem. Soc., 98, 1287 (1976)

[8] Gallezot P, Weber RS, DallaBetta RA, Boudart M, Z. Naturforsch., 34a, 40 (1978)

[9] Holstein WL, Boudart M, J. Catal., 72, 328 (1981)

[10] Holstein WL, Boudart M, Fuel, 62, 162 (1983)

[11] Holstein WL, Moorhead RD, Poppa H, Boudart M, Chem. Phys. Carbon, 18, 139 (1982)

[12] Keep CW, Terry S, Wells M, J. Catal., 66, 451 (1980)

[13] Leclercq L, Imura K, Yoshida S, Barbee T, Boudart M, "Synthesis of New Catalytic Materials: Metal Carbides of the Group VIb Elements,' Preparationof Catalysts II. Delmon, B., Grange, P., Jacobs, P.A. and Poncelet, G., eds, Elsevier, Amsterdam (1978)

[14] Lee JS, Locatelli S, Oyama ST, Boudart M, J. Catal., 125, 157 (1990)

[15] McKee DW, Chem. Phys. Carbon, 16, 1 (1980)

[16] Rewick RT, Wentrcek PR, Wise H, Fuel, 53, 274 (1974)

[17] Yang RT, Wong C, J. Catal., 85, 154 (1984)