Tritium release experiments on Li₄SiO₄ pebbles from TRINPC-I experiments: Effects of water adsorption and hydrogen gas

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• 作者：Chunmei Kang^aAuthor Vitae ; Xiaolin Wang^b ; ^{xlwang@caep.ac.cn}Author Vitae ; Chengjian Xiao^a ; Yuhui He^a ; Xiaojun Chen^a ; Jun Liu^a ; Heyi Wang^a ; Shuming Peng^a
• 关键词：Li4SiO4 ; Tritium ; Water adsorption effect ; H2 effect
• 刊名：Fusion Engineering and Design
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：88
• 期：3
• 页码：113-117
• 全文大小：581 K

文摘

Out-of-pile tritium release experiments under different water uptake contents and purge gas chemistry were performed on Li₄SiO₄. Water measurement was performed on samples under different experimental procedures. It was found that water was adsorbed on the sample during its transferring and storage process. A strong dependence of tritium release behavior on water uptake was determined. By doping H₂ in the sweep gas, the formation of water in orthosilicate was observed in addition to the isotope exchange reaction with H₂ gas. Thermal desorption peaks of the water formation reaction and H₂ isotope exchange reaction appeared at 668 ¡ãC and 463 ¡ãC, respectively, at ramping rate of 5 ¡ãC/min.