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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 12
BKCSDE 21(12)
December 20, 2000 

A Study on the Sulfur-Resistant Catalysts for Water Gas Shift Reaction III. Modification of Mo/ g-Al2O3 Catalyst with Iron Group Metals
Jin-Nam Park, Jae-Hyun Kim, Ho-In Lee
Mo/Υ-Al₂O₃ catalysts modified with Fe, Co, and Ni were prepared by impregnation method and catalytic activity for water gas shift reaction was examined. The optimum amount of Mo loaded for the reaction was 10 wt% MoO₃ to Υ-Al₂O₃. The catalytic activity of MoO₃/Υ-Al₂O₃ was increased by modifying with Fe, Co, and Ni in the order of Co 〓 Ni > Fe. The optimum amounts of Co and Ni added were 3 wt% based on CoO and NiO to 10 wt% MoO₃/Υ-Al₂O₃, respectively. The TPR (temperature-programmed reduction) analysis revealed that the addition of Co and Ni enhanced the reducibility of the catalysts. The results of both catalytic activity and TPR experiments strongly suggest that the redox property of the catalyst is an important factor in water gas shift reaction on the sulfided Mo catalysts, which could be an evidence of oxy-sulfide redox mechanism.
1233 - 1238
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