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Improved resistance against coke deposition of titania supported cobalt and nickel bimetallic catalysts for carbon dioxide reforming of methane |
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| Authors: | Kazuhiro Takanabe Katsutoshi Nagaoka Ken-ichi Aika |
| Affiliation: | (1) Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku Yokohama, 226-8502, Japan;(2) CREST, JST (Japan Science and Technology Corporation), Japan;(3) Department of Applied Chemistry, Faculty of Engineering, Oita University, Dannoharu 700, Oita 870-1192, Japan |
| Abstract: | The catalytic behavior of bi-metallic Co–Ni/TiO2 catalysts for CO2 reforming of CH4 to synthesis gas was investigated under atmospheric pressure with a particular attention to carbon deposition. The catalysts with optimized Co/Ni ratios showed high catalytic stability towards the reaction with very little amount of deposited carbon at a wide range of reaction temperature (773–1123 K). The results suggest that adjusting of composition of the active metals (Co and Ni) can kinetically control the elementary steps (formation of carbon species and its removal by oxygen species) of CH4/CO2 reaction. |
| Keywords: | cobalt nickel bimetal titania methane CO2 reforming strong resistance to coking |
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