1981 Volume 18 Issue 1 Pages 15-20
The ability of trapping of tritium by silica and alumina which were preliminarily doped with Li and irradiated with neutrons, and the removal of tritium from these materials by ethylene were investigated. Tritium formed in almina was not liberated by the elevation of temperature to 350°C. Tritium in silica was very slightly liberated at above 250°C. The trap of tritium by silica and alumina was explained in terms of the exchange reaction of hydrogen of OH and the bonding of tritium with oxygen produced freshly by the radia-tion damage. Tritium in silica was removed in the form of T-ethylene at 300°C and that in alumina at 100°C. The doping of 10% Ni to silica and alumina promoted the liberation of tritium gas and the formation of T-compounds. The promotion of these reactions were explained in terms of "reversing spillover".
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