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doi: 10.3850/978-981-08-7614-2_IMPRES065
Selective Carbon Monoxide Methanation Reaction Over Supported Ruthenium Catalysts
Ryuji Kikuchi1,a, Shohei Tada1, Kohei Urasaki2 and Shigeo Satokawa2
1Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
arkikuchi@chemsys.t.u-tokyo.ac.jp
2Department of Materials and Life Science, Faculty of Science and Technology, Seikei University 3-3-1 Kichijoji-Kitamachi, Musashino-shi, Tokyo 180-8633, Japan
ABSTRACT
Selective CO methanation has been investigated to remove CO contained in hydrocarbon reformates applicable to polymer electrolyte fuel cells. High selectivity of CO methanation is important, since excessive hydrogen consumption as well as runaway of methanation reaction can occur if CO2 methanation reaction proceeds simultaneously. In this study, selective CO methanation was investigated over supported ruthenium catalysts, and effects of supports and metal additives to ruthenium on the activity and selectivity of CO methanation were examined. Selectivity of CO methanation was improved over TiO2-supported Ru catalysts, compared to those supported on Al2O3. Nickel addition to Ru/TiO2 enhanced CO methanation activity, whereas CO2 methanation was not promoted, leading to the expansion of the temperature range for selective CO methanation.
Keywords: Selective CO methanation, Ru/TiO2, Ru/Al2O3, Bimetallic catalysts.
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