Characteristics of Titanium Sponge for the Storage of Hydrogen Isotopes: I. Activation Process

Seougwoo Paek; Do-He Ahn; Kwang-Rak Kim; Minsoo Lee; Hongsuk Chung

Journal of Industrial and Engineering Chemistry, Vol.10, No.3, 468-472, May, 2004

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Characteristics of Titanium Sponge for the Storage of Hydrogen Isotopes: I. Activation Process

Seougwoo Paek^†, Do-He Ahn, Kwang-Rak Kim, Minsoo Lee, and Hongsuk Chung

Nuclear Chemical Engineering Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea

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Tritium, a radioactive isotope of hydrogen, is removed from heavy water at a TRF (Tritium Removal Facility). Titanium sponge has been selected as a suitable material for tritium immobilization. The purpose of this study was to determine the optimum activation procedure for the storage of tritium in the WTRF. The influence of each different variable, such as the activation temperature, time, and pressure, on the hydriding properties of the titanium sponge was investigated. We found that 400 ℃ is the minimum activation temperature of the titanium sponge for the hydriding reaction; we chose 500 ℃ to be the activation temperature. The activation procedure, which is determined for other experiments, involves heating for two hours at 500 ℃ while maintaining a minimum vacuum of 1.0 × 10^-6 torr.

Keywords:hydrogen isotopes;titanium sponge;activation

[References]

Holtslander WJ, Miller JM, AECL-7757 (1982)
Holtslander WJ, Yaraskavitch JM, AECL-7151 (1981)
Miller JM, Holtslander WJ, Johnson RE, Taylor WR, INIS-mf-12730, 363 (1986)
Dushman S, Vacuum Technique, p. 600, John Wiley and Sons, Inc., New York (1949)
Noga JO, OH-81-368-K (1981)
Kherani NP, Shmayda WT, Fusion Technol., 82, 2399 (1985)
Paek S, Ahn DH, Kim KR, Chung H, J. Ind. Eng. Chem., 8(1), 12 (2002)
Yaraskavitch JM, Holtslander WJ, Proc. Int. Symp. on the Metal-Hydrogen Systems, Miami Beach, FL., T.N. Veziroglu Ed., p. 619, Pergamon, Oxford (1982)

[Referenced By]

[1] Holtslander WJ, Miller JM, AECL-7757 (1982)

[2] Holtslander WJ, Yaraskavitch JM, AECL-7151 (1981)

[3] Miller JM, Holtslander WJ, Johnson RE, Taylor WR, INIS-mf-12730, 363 (1986)

[4] Dushman S, Vacuum Technique, p. 600, John Wiley and Sons, Inc., New York (1949)

[5] Noga JO, OH-81-368-K (1981)

[6] Kherani NP, Shmayda WT, Fusion Technol., 82, 2399 (1985)

[7] Paek S, Ahn DH, Kim KR, Chung H, J. Ind. Eng. Chem., 8(1), 12 (2002)

[8] Yaraskavitch JM, Holtslander WJ, Proc. Int. Symp. on the Metal-Hydrogen Systems, Miami Beach, FL., T.N. Veziroglu Ed., p. 619, Pergamon, Oxford (1982)