Multi-component behaviors of hydrogen isotopes adsorbed on synthetic zeolites 4A and 5A at 77.4 K and 87.3 K

作者：Kotoh K^*; Takashima S; Sakamoto T; Tsuge T

来源：Fusion Engineering and Design, 2010, 85(10-12): 1928-1934.

DOI：10.1016/j.fusengdes.2010.06.029

• Synthetic zeolites
• Adsorption isotherms
• Multi-component adsorption
• Hydrogen isotope separation
• Separation factors
• Tritium

We already reported the experimental isotherms for H(2) and D(2) adsorbed onto synthetic zeolites 5A (SZ-5A) and 13X (SZ-13X) at 77.4 K and the experimental multi-component behavior of H(2)-D(2) or H(2)-HD-D(2) adsorbed onto these adsorbents, where the isotherms were approximated by the expression derived from a thermodynamic adsorbed-solution model and the separation factors were interpreted with the ideal adsorbed-solution (LAS) theory. In this work, H(2) and D(2) isotherms on synthetic zeolite 4A (SZ-4A) were measured at 77.4 K and 87.3 K, and separation factors were investigated in the systems of H(2)-D(2) and H(2)-HD-D(2) at the same temperatures, in addition to the examination on SZ-5A at 87.3 K. The isotherms on SZ-4A at both temperatures are fitted with the model expression as well as on SZ-5A and SZ-13X, and also the separation factors are described with the IAS theory. The results show the high performance of SZ-4A for hydrogen isotope separation relatively to that of SZ-5A or/and SZ-13X.

• 出版日期2010-12