Recovery and storage of tritium by Zr-V-Fe getter
The rates of ab/desorption of water vapor for zr-V-Fe getter were investigated by means of mass analyzed thermal desorption spectroscopy. The absorption rate obeyed first order kinetics with respect to the pressure of water vapor. The activation energies for absorption were determined as 1.8 (H/sub 2/O), 2.7 (D/sub 2/O), and 3.2 (T/sub 2/O) kcal/mol. Only hydrogen was desorbed by heating the getter in which water was absorbed. The desorption obeyed second order kinetics with respect to the amount of absorption. The activation energies for desorption were determined as 28.0 (H/sub 2/O), 28.6 (D/sub 2/O), and 29.3 (T/sub 2/O) kcal/mol. It is concluded that the rate determining step for absorption is the dissociation reaction of adsorbed water molecules or hydroxyl groups on the surface. The rate determining step for desorption is the association reaction of hydrogen atoms which diffuse from the bulk to the surface.
- Research Organization:
- Tritium Research Center, Toyama University, Gofuku 3190, Toyama
- OSTI ID:
- 5917894
- Report Number(s):
- CONF-850405-
- Journal Information:
- Fusion Technol.; (United States), Journal Name: Fusion Technol.; (United States) Vol. 8:2; ISSN FUSTE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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ABSORPTION
ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
DESORPTION
DIFFUSION
DISSOCIATION
FLUIDS
GASES
GETTERING
GETTERS
HEAVY WATER
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
IRON ALLOYS
ISOTOPES
KINETICS
LABELLED COMPOUNDS
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTION KINETICS
RECOVERY
STORAGE
TRITIUM
TRITIUM COMPOUNDS
TRITIUM OXIDES
TRITIUM RECOVERY
VANADIUM ALLOYS
VAPORS
WATER
WATER VAPOR
YEARS LIVING RADIOISOTOPES
ZIRCONIUM ALLOYS