Preparation of Benzo-15-Crown-5 Adsorbents for the Separation of Lithium Isotopes by Displacement Chromatography
Preparation of Benzo-15-Crown-5 Adsorbents for the Separation of Lithium Isotopes by Displacement Chromatography
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DOI：
10.1080/15361055.2017.1293424
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发表时间：
2017-04
影响因子：
0.9
通讯作者：
T. Sugiyama;K. Sugiura
中科院分区：
文献类型：
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作者：
T. Sugiyama;K. Sugiura
摘要 为降低顶替色谱分离锂同位素冠醚吸附剂柱的HETP值，采用直径60、100、250 μm的多孔硅珠和苯并15冠5醚制备吸附剂。填充柱的 HETP 值通过色谱实验根据穿透曲线获得的数据来估计。 HETP值随着吸附剂粒径的增大而减小，粒径为60μm时，HETP值为0.16mm。数值模拟结果表明，使用粒径为5μm的吸附剂可以将HETP值降低到10μm的量级。
Abstract For decreasing the HETP value of a column packed with a crown ether adsorbent for the separation of lithium isotopes by displacement chromatography, adsorbents were prepared using porous silica beads having diameters of 60, 100, and 250 μm and benzo-15-crown-5 ether. The HETP values of the packed column were estimated by chromatographic experiments by data obtained from breakthrough curves. The HETP values decreased with the particle diameter of the adsorbent, and an HETP value of 0.16 mm was obtained for a particle diameter of 60 μm. Numerical simulation results suggested that the HETP value can be possibly reduced to the order of 10 μm by using an adsorbent with a particle diameter of 5 μm.