Separative Analyses of a Chromatographic Column Packed with a Core-Shell Adsorbent for Lithium Isotope Separation
Separative Analyses of a Chromatographic Column Packed with a Core-Shell Adsorbent for Lithium Isotope Separation
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DOI：
10.13182/fst14-t85
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发表时间：
2015-03
影响因子：
0.9
通讯作者：
T. Sugiyama;K. Sugiura;Y. Enokida;I. Yamamoto
中科院分区：
文献类型：
--
作者：
T. Sugiyama;K. Sugiura;Y. Enokida;I. Yamamoto
摘要提出了一种用于锂同位素色谱分离的核壳型吸附剂。对塔内浓度分布及其随时间的变化进行了数值模拟。很明显，具有薄多孔壳的核壳型吸附剂相对于完全多孔的吸附剂迅速饱和，并建立了尖锐的吸附带边缘。这是非常重要的特征，因为锂同位素分离需要长距离发展吸附带。用阶跃响应曲线的统计矩估计了核壳型吸附剂填料塔的HETP值。HETP的值随着多孔壳的厚度而减小。因此，核-壳型吸附剂可用于锂同位素分离。
Abstract A core-shell type adsorbent was proposed for lithium isotope separation by chromatography. Concentration profiles and its time variation in the column were numerically simulated. It became clear that core-shell type adsorbents with thin porous shell were saturated rapidly relative to fully porous one and established a sharp edge of adsorption band. This is very important feature because lithium isotope separation requires long-distance development of adsorption band. The values of HETP for core-shell adsorbent packed column were estimated by statistical moments of the step response curve. The value of HETP decreased with the thickness of the porous shell. A core-shell type adsorbent is, then, useful for lithium isotope separation.