摘要
进行了室温附近LaNi5和LaNi4 .7Al0 .3 两种材料上气 固间氢氘的排代实验。两种材料的排代效果都较好 ,相比之下 ,LaNi5的更优。可以推测 ,在不要求得到高纯氚的情况下 ,都可以用作氚的冷卸载贮存床。初步的理论探讨揭示 ,气 固界面的化学交换反应是产生排代效应的原因 ,宏观交换规律决定排代效果。理想化的塔板理论模型对排代流出曲线的描述是有效和适用的 ,塔板高度是材料排代性能优劣的指标 ,在确定的排代条件下 ,如果塔板高度小于 1.0cm ,应该认为具有较好的排代效果。
A Series displacement experiments between hydrogen and deuterium in LaNi 5 and LaNi 4.7 Al 0.3 hydride column had been conducted at room temperature about. Both materials had shown quite fine displacement characteristics,especially in LaNi 5. If there is no need for high pure concentration tritium, these materials can be used as cold unload tritium storage bed. Some theoretical research reveals that exchange reaction of isotopes in gas solid interface result in the displacement behavior and exchange rate determines the displacing efficiency. The ideal stage mode could be used to describe the displacement breakthrough cure. The height equivalent to theoretical plate(HETP) determines the displacing effects. Under definite displacing conditions, if the HETP is less than 1.0 cm, the displacing effect should be recognized as fine.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2000年第4期595-602,共8页
Journal of Atomic and Molecular Physics
基金
中国工程物理研究院科学技术重点基金资助项目!(98Z0 5 0 2 )
关键词
氢同位素
金属氢化物
气固排代
LaNi 5
LaNi 4.7 Al 0.3
Hydrogen isotopes
Metal hydride
Gas solid displacement
