Two plateaux for palladium hydride and the effect of helium from tritium decay on the desorption plateau pressure for palladium tritide
- Westinghouse Savannah River Co., Savannah River Lab., Aiken, SC (US)
Two plateaux are observed in the desorption isotherm for palladium hydride: a lower plateau pressure for a hydrogen/metal atom ratio (H/M) less than about 0.3 and a slightly higher plateau pressure for H/M greater than about 0.3. This higher pressure corresponds to the reported pressure for palladium hydride. These observations were made for a large surface area palladium powder exposed to both protium and tritium. Helium buildup form tritium decay decreases the lower plateau pressure but does not affect the observations for H/M greater than about 0.3. In this paper, a multiple-energy hydrogen site occupancy model is proposed to explain qualitatively both the dual plateau and the helium effect in palladium hydride.
- OSTI ID:
- 7179477
- Journal Information:
- Materials Performance; (United States), Journal Name: Materials Performance; (United States) Vol. 27:3; ISSN 0094-1492; ISSN MTPFB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080201 -- Hydrogen-- Chemisorption Storage
080204 -- Hydrogen-- Transport & Handling-- (1990-)
080800* -- Hydrogen-- Properties & Composition
664100 -- Theory of Electronic Structure of Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
BUILDUP
CHEMICAL COMPOSITION
DECAY
DESORPTION
ELEMENTS
FLUIDS
GASES
HELIUM
HYDRIDES
HYDROGEN COMPOUNDS
ISOTHERMAL PROCESSES
NONMETALS
PALLADIUM COMPOUNDS
PALLADIUM HYDRIDES
RARE GASES
SORPTION
TRANSITION ELEMENT COMPOUNDS
TRITIUM COMPOUNDS