2014年9月
Effect of metal addition to Ru/Ti02 catalyst on selective CO methanation
CATALYSIS TODAY
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- 巻
- 232
- 号
- 開始ページ
- 16
- 終了ページ
- 21
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.cattod.2013.09.048
- 出版者・発行元
- ELSEVIER SCIENCE BV
Selective CO methanation over Ru/Ti02, Ru-Ni/Ti02, Ru-Co/Ti02, Ru-Fe/Ti02, Ru-La/Ti02, Ru-K/Ti02, and Ru-Ni-La/TiO2 was investigated as a CO removal method from reformate gas for polymer electrolyte fuel cell applications, and the selectivity and activity were examined. The addition of Co and La to Ru/TiO2 improved both CO and CO2 methanation, while the addition of Ni raised only the activity for CO methanation. The addition of La increased the electron density in the Ru species, which likely enhanced the dissociation of the C-0 bond of CO on Ru probably due to back donation of electrons from Ru to CO. This led to high CO methanation activity over Ru-Laffi02. The trimetallic catalyst Ru-Ni-La/TiO2 showed the highest CO methanation activity among the prepared catalysts, resulting in a wider temperature range for selective CO methanation at low temperatures compared to Ru/Ti02. Crown Copyright 2013 Published by Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.cattod.2013.09.048
- ISSN : 0920-5861
- eISSN : 1873-4308
- Web of Science ID : WOS:000336384000004