New synthesis method of advanced lithium titanate with Li4TiO4 additives for ITER-TBM
New synthesis method of advanced lithium titanate with Li4TiO4 additives for ITER-TBM
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DOI：
10.1016/j.fusengdes.2008.12.049
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
T. Hoshino;Kato Kenichi;Yuri Natori;Mutsumi Nakamura-;K. Sasaki;K. Hayashi;T. Terai;K. Tatenuma
中科院分区：
文献类型：
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作者：
T. Hoshino;Kato Kenichi;Yuri Natori;Mutsumi Nakamura-;K. Sasaki;K. Hayashi;T. Terai;K. Tatenuma
钛酸锂（Li 2 TiO 3）是聚变堆固体增殖材料中最有前途的候选材料之一。在惰性吹扫气中加入H2可提高增殖材料中增殖氚的释放。然而，已发现Li 2 TiO 3的质量在氢气气氛中随着时间的推移而减少。这种质量变化表明样品的氧含量降低，表明从Ti 4+到Ti 3+的变化。开发含Li 4 TiO 4添加剂的Li 2 TiO 3有望有效控制高温使用时的质量变化。本文采用固相反应法对高性能钛酸锂（Li_2TiO_3 + Li_4TiO_4）的合成方法进行了研究。采用电感耦合等离子体原子发射光谱（ICP-AES）和X射线衍射（XRD）对样品的晶体结构进行了分析。反应后样品的Li 2 O/TiO 2摩尔比与混合LiOH·H2O和H2 TiO 3时的值非常一致。结果表明，在国际热核聚变实验堆（ITER）试验包层模块（TBM）批量生产技术的前景中，LiOH·H2O与H2 TiO 3的固相反应是制备Li 4 TiO 4高级钛酸锂的最佳方法之一。
Lithium titanate (Li2TiO3) is one of the most promising candidates among the proposed solid breeder materials for fusion reactors. Addition of H2to inert sweep gas has been proposed for enhancing the release of bred tritium from breeder material. However, the mass of Li2TiO3has been found to decrease with time in the hydrogen atmosphere. This mass change indicates that the oxygen content of the sample decreased, suggesting the change from Ti4+to Ti3+. Development of Li2TiO3with Li4TiO4additive is expected to be effective in control the mass change at the time of high temperature use. In the present paper, synthetic methods of advance lithium titanate (Li2TiO3added with Li4TiO4) have been extensively investigated by solid state reaction. The crystal structure of the sample was analyzed by means of inductively coupled plasma atomic emission spectrometry (ICP-AES) and X-ray diffraction (XRD). The molar ratios Li2O/TiO2of samples after the reaction were in good agreement with the values at the time of mixing LiOH·H2O and H2TiO3. The overall results suggest that the solid state reaction of LiOH·H2O and H2TiO3is one of the most appropriate synthesis methods for advanced lithium titanate with Li4TiO4in prospect of mass production technology for the test blanket module (TBM) of International Thermonuclear Experimental Reactor (ITER).