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>> Activated charcoal supported nickel molybdenum carbide (carburized Ni-Mo/AC) catalysts were prepared by wet-impregnation followed by temperature-programmed carburization using 20% CH 4 /H 2 gas. The effects of pH and initial Ni/Mo mole ratio during wet-impregnation step on the characteristics of the carburizedNi-Mo/AC catalysts were investigated using ICP, XRD, XPS, BET and CO 2 -TPD techniques, and correlated withthe catalytic activity of the carburized Ni-Mo/AC in methane dry reforming reaction. Comparison of the resultsof methane dry reforming reaction kinetics with the results of characterization of the carburized Ni-Mo/AC catalystshowed that the catalytic activity in methane dry reforming reaction was higher at higher initial Ni/Mo mole ratioor at lower pH(3~natural value). This phenomenon was related to the crystal size of metallic Ni in the carburizedNi-Mo/AC catalyst. Key words : Nickel molybdenum carbide(니켈 몰리브덴 카바이드), Wet-impregnation(습식담지), Carburization(침탄), pH(수소이온농도지수), Initial Ni/Mo mole ratio(초기 Ni/Mo 몰비) |
