Liquid suspensions of reversible metal hydrides
The reversibility of the process M + x/2 H/sub 2/ ..-->.. MH/sub x/, where M is a metal hydride former that forms a hydride MH/sub x/ in the presence of H/sub 2/, generally used to store and recall H/sub 2/, is found to proceed under a liquid, thereby to reduce contamination, provide better temperature control and provide in situ mobility of the reactants. Thus, a slurry of particles of a metal hydride former with an inert solvent is subjected to temperature and pressure controlled atmosphere containing H/sub 2/, to store hydrogen (at high pressures) and to release (at low pressures) previously stored hydrogen. The direction of the flow of the H/sub 2/ through the liquid is dependent upon the H/sub 2/ pressure in the gas phase at a given temperature. When the former is above the equilibrium absorption pressure of the respective hydride the reaction proceeds to the right, i.e., the metal hydride is formed and hydrogen is stored in the solid particle. When the H/sub 2/ pressure in the gas phase is below the equilibrium dissociation pressure of the respective hydride the reaction proceeds to the left, the metal hydride is decomposed and hydrogen is released into the gas phase.
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- Dept. of Energy
- Application Number:
- ON: DE84014358
- OSTI ID:
- 6860248
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HYDROGEN STORAGE
LANTHANUM HYDRIDES
NICKEL HYDRIDES
TITANIUM HYDRIDES
LANTHANUM ALLOYS
LIQUIDS
NICKEL ALLOYS
SORPTIVE PROPERTIES
SUSPENSIONS
TITANIUM ALLOYS
ALLOYS
DISPERSIONS
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
LANTHANUM COMPOUNDS
NICKEL COMPOUNDS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
STORAGE
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
080201* - Hydrogen- Chemisorption Storage
360105 - Metals & Alloys- Corrosion & Erosion