Group 3A and 4A substituted AB/sub 5/ hydrides
Crystallographic cell volume data are presented for a series of alloys LaNi/sub 5-x/M/sub x/(M = Al, Ga, In, Si, Ge, Sn) for x = 0 to 0.5. Pressure-composition desorption isotherms were measured for the hydrides of LaNi/sub 4/ /sub 6/Si/sub 0/ /sub 4/ and LaNi/sub 4/ /sub 6/Ge/sub 0/ /sub 4/ at 30, 40, and 60/sup 0/C. From plots of ln P vs. 1/T the enthalpies and entropies of transition were calculated to be -8.5 kcal/mol of H/sub 2/ and -27.3 cal/(mol of H/sub 2/ deg) for LaNi/sub 4/ /sub 6/Si/sub 0/ /sub 4/H/sub y/ and -8.2 kcal/mol of H/sub 2/ and -26.5 cal/(mol of H/sub 2/ deg) for LaNi/sub 4/ /sub 6/Ge/sub 0/ /sub 4/H/sub y/. The thermodynamic quantities as well as the hysteresis behavior of these hydrides are compared to data previously obtained for the hydrides of LaNi/sub 4/ /sub 6/Al/sub 0/ /sub 4/, LaNi/sub 4/ /sub 6/Ga/sub 0/ /sub 4/, LaNi/sub 4/ /sub 6/In/sub 0/ /sub 4/, and LaNi/sub 4/ /sub 6/Sn/sub 0/ /sub 4/.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 5599011
- Journal Information:
- Inorg. Chem.; (United States), Vol. 18:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
08 HYDROGEN
36 MATERIALS SCIENCE
HYDROGEN
DESORPTION
ALUMINIUM ALLOYS
CRYSTAL STRUCTURE
THERMODYNAMIC PROPERTIES
LANTHANUM ALLOYS
NICKEL ALLOYS
GALLIUM ALLOYS
INDIUM ALLOYS
SILICON ALLOYS
GERMANIUM ALLOYS
TIN ALLOYS
EXPERIMENTAL DATA
HYDRIDES
ISOLATED VALUES
ALLOYS
CRYOGENIC FLUIDS
DATA
DATA FORMS
ELEMENTS
FLUIDS
HYDROGEN COMPOUNDS
INFORMATION
NONMETALS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
400201* - Chemical & Physicochemical Properties
080200 - Hydrogen- Storage
Transport & Handling
360102 - Metals & Alloys- Structure & Phase Studies