Synthesis and phase structure of (Cs0.8xBa0.4+x)(Al3+1.6+xTi4+6.4-x)O16 ceramics using sol-spray pyrolysis route for immobilizing radioactive cesium
Synthesis and phase structure of (Cs0.8xBa0.4+x)(Al3+1.6+xTi4+6.4-x)O16 ceramics using sol-spray pyrolysis route for immobilizing radioactive cesium
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溶胶喷雾热解法固定放射性铯的(Cs0.8-xBa0.4 x)(Al1.6 x3 Ti6.4-x4 )O-16陶瓷的合成及相结构
DOI：
10.1007/s10967-019-06545-2
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发表时间：
2019
影响因子：
1.6
通讯作者：
Linyan Li
中科院分区：
文献类型：
--
作者：
Yushan Yang;Xiaodong Xie;Xiaoyong Yang;Xirui Lu;Ke Yu;Lingshuang Li;Xueli Wang;Xiaofen Wang;Jiang Ma;Linyan Li
本文采用溶胶-喷雾热解法制备了（Cs，Ba）-硬硅钙石陶瓷废料。采用溶胶-喷雾热分解法制备的粉体在1050 °C下合成了高相纯度的（Cs0.8-xBa0.4+x）（Al1.6+xTi6.4-x）O 16（0 ≤ x ≤ 0.4）陶瓷。结果表明，所有样品均为棒状的四方锰氧化物。此外，烧结的（Cs，Ba）-锰钡石陶瓷表现出良好的化学耐久性。Cs和Ba的标准化释放速率在14天后< 10-2 g m-2 d-1。这些结果表明，锰钡石陶瓷是一种很有前途的固定放射性铯的材料。
In this paper, a sol-spray pyrolysis route was employed to fabricate (Cs,Ba)-hollandite ceramic waste forms. The high-phase purity (Cs0.8-xBa0.4+x)(Al1.6+xTi6.4-x)O16 (0 ≤ x ≤ 0.4) ceramics were synthesized at 1050 °C using the produced powders by sol-spray pyrolysis. The results show that all samples show tetragonal hollandite with rod morphology. Additionally, the sintered (Cs,Ba)-hollandite ceramics exhibit a good chemical durability. The normalized release rates of Cs and Ba were < 10-2 g m-2 d-1 after 14 days. These results indicate that hollandite ceramics are promising candidate for immobilizing radioactive cesium.