Enrichment of N-15 by Ion Exchange Chromatography

通过离子交换色谱法富集 N-15

• 批准号: 07558280
• 负责人: FUJII Yasuhiko
• 金额: $ 0.58万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558280/
• 关键词: Ion-Exchange Resin,; Chromatography,; Isotopes,; N-15,; Isotope-Separation,; Mass Analysis,; Isotope Separaion Coefficient,; HETP

Recently attention has been placed on the enrichment of nitrogen isotope N-15, which is indispensable for production of nitride fuels to be used in Fast Neutron Reactors. The present work is devoted to the development of N-15 enrichment process based on ion exchange. In the present work, porous sulfonic acid type cation exchange resin, TITEC-H1 was synthesized ; 30% crosslinking, 200-400 mesh. Using this resin, ion exchange chromatography of NH_4+ ion band was conducted at different conditions of temperature, concentration of the eluent, and the flow rate.The results show that around 1 M concentration is appropriate for the eluent. Temperature does not affects on the separation performance so largely as expected form other elements. The rate of the feed solution has shown a very interesting tendency relating to the HETP.The HETPs are increased in both sides of low flow rate and high flow rate, giving the minimum value at a certain flow rate. This pattern of HETP has been analyzed by the laminar-turbulent flow model.

最近，人们注意到氮同位素N-15的富集，这对于在快速中子反应堆中使用的氮化物燃料是必不可少的。目前的工作致力于基于离子交换的N-15富集过程的开发。在目前的工作中，多孔磺酸型阳离子交换树脂合成了Titec-H1。 30％的交联，200-400网格。使用该树脂，在不同的温度条件，洗脱液的浓度和流速的不同条件下进行了NH_4+离子带的离子交换色谱法。结果表明，大约1 m的浓度适合洗脱液。温度不会像预期的其他元素那样影响分离性能。进料溶液的速率显示出与HETP有关的非常有趣的趋势。低流量和高流量的两侧HETP都增加了，以一定的流速为最小值。这种HETP模式已通过层流扰动流量模型进行了分析。

项目成果

Haruhisa Ohtsuka et al.: "Nitrogen Isotope Separation by Means of Cation Exchange Resin(I)" J.Nucl.Sci.Technol.32,. 1001-1007 (1995)

Haruhisa Ohtsuka 等人：“通过阳离子交换树脂进行氮同位素分离 (I)”J.Nucl.Sci.Technol.32，。

Haruhisa Ohtsuka: "Nitrogen Isotope Separation by Means of Cation Exchange Resin(I)" J.Nucl.Sci.Technol.32. 1001-1007 (1995)

Haruhisa Ohtsuka：“通过阳离子交换树脂进行氮同位素分离（I）”J.Nucl.Sci.Technol.32。

Haruhisa Ohtsuka et al.: "Nitrogen Isotope Separation by Means of Cation Exchange Resin(I)" J.Nucl.Sci.Technol.32. 1001-1007 (1995)

Haruhisa Ohtsuka 等人：“通过阳离子交换树脂进行氮同位素分离 (I)”J.Nucl.Sci.Technol.32。

H.Ohtsuka, M.Ohwaki, M.Nomura, M.Okamoto and Y.Fujii: "Nitrogen Isotoppe Separation by Means of Cation Exchange Resin(I)" J.Nucl.Sci.Technol.32(10). 1001-1007 (1995)

H.Ohtsuka、M.Ohwaki、M.Nomura、M.Okamoto 和 Y.Fujii：“通过阳离子交换树脂进行氮同位素分离 (I)”J.Nucl.Sci.Technol.32(10)。