Thermochemical hydrogen production by a redox system of ZrO2-supported Co(II)-ferrite
Thermochemical hydrogen production by a redox system of ZrO2-supported Co(II)-ferrite
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DOI：
10.1016/j.solener.2004.04.008
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发表时间：
2005-01-01
期刊：
影响因子：
6.7
通讯作者：
Satou, N
中科院分区：
文献类型：
--
作者：
Kodama, T;Kondoh, Y;Satou, N
研究了在1400 ℃以下ZrO 2负载的Co（II）-铁氧体上的热化学两步水分解，目的是将太阳能高温热转化为清洁的氢能作为太阳能的储存和运输。在惰性气氛下，在1400 ℃下，ZrO 2载体上的铁氧体热分解为还原相的浮氏体。在单独的步骤中，在低于1000摄氏度下用蒸汽在ZrO 2载体上再氧化还原相以产生氢气。ZrO 2的负载减轻了氧化铁的高温烧结。结果表明，ZrO 2负载型铁氧体比传统的无负载型铁氧体具有更高的循环水分解反应活性和更好的重复性。当在惰性气氛下于1400 ℃热还原时，发现x值在0.4-0.7之间的CoxFe 3-xO 4/ZrO 2是有希望的两步水裂解的工作材料。(c)2004年由Elsevier Ltd.出版。
The thermochemical two-step water splitting was examined on ZrO2-supported Co(II)-ferrites below 1400 degrees C, for purpose of converting solar high-temperature heat to clean hydrogen energy as storage and transport of solar energy. The ferrite on the ZrO2-support was thermally decomposed to the reduced phase of wustite at 1400 degrees C under an inert atmosphere. The reduced phase was reoxidized with steam on the ZrO2-support to generate hydrogen below 1000 degrees C in a separate step. The ZrO2-supporting alleviated the high-temperature sintering of iron oxide. As the results, the ZrO2-supported ferrite realized a greater reactivity and a better repeatability of the cyclic water splitting than the conventional unsupported ferrites. The CoxFe3-xO4/ZrO2 with the x value of around 0.4-0.7 was found to be the promising working material for the two-step water splitting when thermally reduced at 1400 degrees C under an inert atmosphere. (c) 2004 Published by Elsevier Ltd.