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http://dx.doi.org/10.7316/KHNES.2014.25.4.344

A Study on the Effects of pH and Ni/Mo Mole Ratio during Wet Impregnation on the Characteristics and Methane Dry Reforming Reactivity of Activated Charcoal Supported Ni-Mo Carbide Catalyst  

Lee, Dongmin (Department of Chemical and Biomolecular Engineering, Sogang University)
Hwang, Unyeon (Department of Chemical and Biomolecular Engineering, Sogang University)
Park, Hyungsang (Department of Chemical and Biomolecular Engineering, Sogang University)
Park, Sungyoul (Climate Change Research Division, Korea Institute of Energy Research)
Kim, Seongsoo (Climate Change Research Division, Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.25, no.4, 2014 , pp. 344-354 More about this Journal
Abstract
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 carburized Ni-Mo/AC catalysts were investigated using ICP, XRD, XPS, BET and $CO_2$-TPD techniques, and correlated with the catalytic activity of the carburized Ni-Mo/AC in methane dry reforming reaction. Comparison of the results of methane dry reforming reaction kinetics with the results of characterization of the carburized Ni-Mo/AC catalyst showed that the catalytic activity in methane dry reforming reaction was higher at higher initial Ni/Mo mole ratio or at lower pH(3~natural value). This phenomenon was related to the crystal size of metallic Ni in the carburized Ni-Mo/AC catalyst.
Keywords
Nickel molybdenum carbide; Wet-impregnation; Carburization; pH; Initial Ni/Mo mole ratio;
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