Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 48 / Number 1 / Pages 148-151
Kenji Kotoh, Kazuhiko Kudo
Fusion Science and Technology / Volume 48 / Number 1 / Pages 148-151
Format:electronic copy (download)
Equilibrium isotherms for the adsorption of H2, HD, HT, D2, DT and T2 on synthetic zeolite type 5A or 13X at 77.4 K are estimated by using a theoretical formula, where the isotopic difference in adsorption depends on the zero-point energy difference between hydrogen isotopes. The formula agrees with the experimental isotherms for H2 and D2 on the zeolites. Adsorption of H2-D2 and H2-HD-D2 mixtures on the same adsorbents is experimentally examined. The experiments are performed using a volumetric apparatus and a quadra-pole-type mass spectrograph. The experimental adsorption behavior of H2, D2 and HD shows agreement of separation factors with results calculated according to the ideal adsorbed solution theory describing multi-component behavior, where the equilibrium isotherms estimated for H2, HD and D2 are used. Based on the theoretical adsorption model, the multi-component behavior of HT, DT and T2 is predicted here.
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