Nuclear Technology Isotopes And Radiation Sources

EXAMINATION OF 80 DEGREES C DESORPTION ISOTHERMS OFTRITIUM AGED PD/K AND LANA.75

Authors: Staack, G Kirk Shanahan, K Tom Walters, T Roger Pilgrim, R
 
Abstract: Metal hydrides, specifically Pd deposited on kieselguhr (Pd/k) and LaNi 4.25Al 0.75 (LANA.75), have been used at the Savannah River Site for almost twenty years for hydrogen isotope separation and storage. Radiolytic decay of tritium to helium-3 in the metal matrix causes three classic changes in the performance of the hydride: the plateau pressure decreases, the plateau slope increases, and a heel forms, reducing the reversible capacity of the hydride. Deuterium and tritium isotherms were collected on the virgin materials, only tritium isotherms were collected at approximately 2 years, and both deuterium and tritium isotherms were collected at approximately 3.5 years of quiescent aging. Points of interest include those mentioned above as well as the effects of cycling the materials. The methods and results are presented.
Publication Date: 28 Aug 2007
Report numbers: WSRC-STI-2007-00464
DOE Contract number: DE-AC09-96SR18500
Resource Type: Journal Article
Resource Relation: Journal: Fusion Science and Technology
Research Organizations: SRS
Sponsoring Organizations: DOE
Country of Publication: United States
Language: English
Keywords relating to this report:
ADSORPTION ISOTHERMS
AGING
ALUMINIUM ALLOYS
DESORPTION
DEUTERIUM
HELIUM 3
HYDRIDES
ISOTOPE SEPARATION
LANTHANUM ALLOYS
NICKEL ALLOYS
PALLADIUM
RADIOLYSIS
TRITIUM