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

被引:12
作者
Kang, Chunmei
Wang, Xiaolin
Xiao, Chengjian
He, Yuhui
Chen, Xiaojun
Liu, Jun
Wang, Heyi
Peng, Shuming
机构
[1] Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 621900
[2] China Academy of Engineering Physics, 919-1
关键词
Li4SiO4; Tritium; Water adsorption effect; H-2; effect; POSTIRRADIATION EXAMINATIONS; LITHIUM ORTHOSILICATE; VAPORIZATION; SILICATES; CHEMISTRY; BEHAVIOR; DEFECTS; LIALO2;
D O I
10.1016/j.fusengdes.2012.11.010
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
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 H-2 in the sweep gas, the formation of water in orthosilicate was observed in addition to the isotope exchange reaction with H-2 gas. Thermal desorption peaks of the water formation reaction and H-2 isotope exchange reaction appeared at 668 degrees C and 463 degrees C, respectively, at ramping rate of 5 degrees C/min. (c) 2013 Published by Elsevier B.V.
引用
收藏
页码:113 / 117
页数:5
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