色谱

色谱 ›› 2017, Vol. 35 ›› Issue (10): 1023-1027.DOI: 10.3724/SP.J.1123.2017.07014

• 研究快报 • 上一篇    下一篇

金属有机框架CPL-1填充柱气相色谱分析氢同位素

胡鹏, 陈平, 曹大伟, 付小龙, 肖成建, 王和义   

  1. 中国工程物理研究院核物理与化学研究所, 四川 绵阳 621900
  • 收稿日期:2017-07-17 出版日期:2017-10-08 发布日期:2017-10-18
  • 通讯作者: 肖成建,E-mail:xiaocj@caep.cn.
  • 基金资助:

    国家磁约束聚变能研究专项项目（2014GB111001，2014GB111004）.

Hydrogen isotopes analysis by gas chromatography using metal-organic framework CPL-1 packed column

HU Peng, CHEN Ping, CAO Dawei, FU Xiaolong, XIAO Chengjian, WANG Heyi   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2017-07-17 Online:2017-10-08 Published:2017-10-18
  • Supported by:

    National Magnetic Confinement Fusion Science Program (Nos. 2014GB111001, 2014GB111004)

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210

被引次数

2

摘要：

金属有机框架（MOFs）材料CPL-1的比表面积大、孔径均一，在低温条件下对氢同位素具有良好的量子筛分效应，是气相色谱固定相潜在的应用材料。采用CPL-1填充制备了长0.5 m、内径1 mm的微孔填充柱，借助单晶Al2O3颗粒间隙构建了色谱载气流通路径，在低温条件下探索研究了CPL-1填充柱的氢同位素分析性能。结果表明，在77 K时CPL-1对H2和D2的吸附量接近4 mmol/g，优于MnCl2/γ -Al2O3和 γ -Al2O3，CPL-1填充柱在取样量0.25~2 mL范围内对低浓度氢同位素样品的检测具有良好的线性关系，检测的相对误差小于4%。CPL-1填充柱具有线性范围宽、重复性好、准确度高等优点，在氢同位素色谱分析中具有潜在的应用价值。

关键词: CPL-1填充柱, 氘氚燃料循环, 金属有机框架, 气相色谱, 氢同位素

Abstract:

CPL-1 is a metal organic framework (MOF) with potential application as stationary phase material in gas chromatographic (GC) analysis, due to its large specific surface area, uniform pore size and good quantum sieving effect on hydrogen isotopes at low temperatures. Herein, a microporous column packed with CPL-1 was used at cryogenic temperature (77 K), and the column was 1.0 mm in inner diameter, 0.5 m in length. Single crystals of Al2O3 was used to build flow path for chromatographic carrier gas. The results showed that the adsorption of H2 and D2 with CPL-1 was 4 mmol/g at 77 K, which was better than MnCl2/γ -Al2O3 and γ -Al2O3. With the injection volume increasing from 0.25 mL to 2 mL, the results showed good linear relationship, and the relative error was less than 4%. The results indicated that the column packed with CPL-1 has wide linear range, good repeatability and high accuracy, and it has potential use in hydrogen isotope analysis with gas chromatography.

Key words: CPL-1 packed column, deuterium tritium fuel cycle, gas chromatography (GC), hydrogen isotope, metal organic frameworks (MOFs)

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