書誌事項
- タイトル別名
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- Two-step Water Splitting Reaction with Ce-Zr Oxide System for Solar Hydrogen Production
- Ce Zrケイ サンカブツ オ モチイタ 2ダンカイ ミズブンカイ ハンノウ ニ ヨル ソーラー スイソ セイサン
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Two-step water splitting reaction with the reactive ceramics of cerium dioxide (CeO2) and zirconium dioxide (ZrO2) solid solutions (Ce-Zr system) which can be applied for solar hydrogen production using concentrated solar thermal energy has been studied. These reactive ceramics are high-temperature resistance and high ion conductivity and the reaction proceeds at high temperature (>1773K) and the high-flux energy (1000-3000 kW/m2) is sufficiently absorbed. The samples of Ce-Zr system were prepared by oxalate coprecipitation method (The molar ratio of Ce : Zr were adjusted 100 : 0, 80 : 20 and 60 : 40.) and by polymerized complex method (Ce : Zr was adjusted 60 : 40). These samples prepared by oxalate coprecipitation method were cubic-main system and the sample prepared by polymerized complex method was tetragonal system. No H2-generation reaction proceeds with tetragonal system at 673-873K, but with cubic-main system, indicating that the reactivity of the two-step water splitting reaction with Ce-Zr system chemical composition of Ce60Zr40 is difficult depending on the crystal system. The reactivity of the two-step water splitting process is enhanced and the O2-releasing temperature is lowered by doping ZrO2 in CeO2. The amounts of H2 evolved in the H2-generation reaction with Ce60Zr40 (cubic-main system prepared by oxalate coprecipitation method) is less than those of Ce100 and Ce80Zr20 at 1473-1573K, but more than those at 1773K. The reaction mechanism on the difference of those H2-generation reactions was investigated.
収録刊行物
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- Eco-Engineering
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Eco-Engineering 19 (4), 255-262, 2007
生態工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680167834880
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- NII論文ID
- 10019786866
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- NII書誌ID
- AA12005685
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- ISSN
- 18804500
- 13470485
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- NDL書誌ID
- 9378826
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可