Extraction of Hydrogen from Water Vapor by Hydrogen Pump Using Ceramic Protonic Conductor
Extraction of Hydrogen from Water Vapor by Hydrogen Pump Using Ceramic Protonic Conductor
复制标题
陶瓷质子导体氢泵从水蒸气中提取氢气
DOI：
10.13182/fst04-a423
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发表时间：
2004
影响因子：
0.9
通讯作者：
M. Nishi
中科院分区：
文献类型：
--
作者：
Y. Kawamura;S. Konishi;M. Nishi
摘要 提出了一种使用带有质子导体膜的电化学氢泵的全氚回收系统。该系统的优点之一是可以在不分离氢同位素和水蒸气的情况下处理覆盖吹扫气。在这项工作中，使用钙钛矿型陶瓷（例如SrCe0.95Yb0.05O3-α）通过氢泵提取水分子中的氢。从水分子中提取氢的阈值对应于 H2O 分解的能量，在 873 K 时为 500 至 600 mV。随着水蒸气分压的增加，阈值变得更小。在泵送H 2 -H 2 O混合气体的情况下，H 2 的输送先于低于阈值(H 2 O分解电压)的H 2 O分解，并且阈值变得更大。为了处理覆盖层吹扫气而不发生氢同位素和水蒸气的分馏，需要相对较高的施加电压。
Abstract A blanket tritium recovery system that uses an electrochemical hydrogen pump with a protonic conductor membrane is proposed. One of the advantages of this system is the potential for processing the blanket sweep gas without fractionation of hydrogen isotopes and water vapor. In this work, hydrogen in a water molecule is extracted by a hydrogen pump using a Perovskite-type ceramic such as SrCe0.95Yb0.05O3-α. The threshold, which corresponds to the energy of H2O decomposition, for hydrogen extraction from the water molecule is 500 to 600 mV at 873 K. The threshold becomes smaller with increases of the partial pressure of the water vapor. In the case of pumping of the H2-H2O mixture gas, transportation of H2 precedes H2O decomposition below the threshold (H2O decomposition voltage), and the threshold becomes larger. In order to process the blanket sweep gas without fractionation of hydrogen isotope and water vapor, comparatively high applied voltage is required.
影响因子：
3.2
作者：
Matsumoto, H;Hamajima, S;Iwahara, H
通讯作者：
Iwahara, H