Abstract Molecular sieves (MSs) are a potentially useful means of hydrogen isotope recovery as well as the temporary storage and supply of such isotopes. In this study, the hydrogen adsorption isotherms for various MS samples were acquired after applying different water removal processes to activate the MSs. MS-3A sample was found not to adsorb hydrogen regardless of the activation conditions. MS-4A sample adsorbed hydrogen at 77 K after heating at 473, 513, and 673 K. However, the adsorption amount after heating at 473, 513 K was considerably less than that at 673 K. Consequently, heating at 673 K was required to activate this type of MS. In the case of an MS-5A sample, the presence of residual water had little effect on hydrogen isotope adsorption at 77 K. From these results, it is evident that MS-5A is the most suitable hydrogen adsorption material because it is readily activated and is less affected by water adsorption.

中文翻译：

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各种热处理后在 77 K 下 A 型沸石对氢和氘的吸附

摘要 分子筛 (MSs) 是一种潜在有用的氢同位素回收手段以及此类同位素的临时储存和供应。在本研究中，在应用不同的除水工艺激活 MS 后，获得了各种 MS 样品的氢吸附等温线。发现无论活化条件如何，MS-3A 样品都不吸附氢。MS-4A 样品在 473、513 和 673 K 加热后在 77 K 吸附氢气。但是，在 473、513 K 加热后的吸附量远小于 673 K。因此，需要在 673 K 加热才能激活这种类型的 MS。在 MS-5A 样品的情况下，残留水的存在对 77 K 时的氢同位素吸附几乎没有影响。 根据这些结果，