Hydride compositions
Patent
·
OSTI ID:870128
- North Augusta, SC
A composition for use in storing hydrogen, and a method for making the composition. The composition comprises a mixture of two or more hydrides, each hydride having a different series of hydrogen sorption isotherms that contribute to the overall isotherms of the mixture. The hydrides are chosen so that the isotherms of the mixture have regions wherein the hydrogen equilibrium pressure increases with increasing hydrogen, preferably linearly. The isotherms of the mixture can be adjusted by selecting hydrides with different isotherms and by varying the amounts of the individual hydrides, or both. Preferably, the mixture is made up of hydrides that have isotherms with substantially flat plateaus and in nearly equimolar amounts. The composition is activated by degassing, exposing to hydrogen and then heating at a temperature below the softening temperature of any of the. constituents so that their chemical and structural integrity is preserved. When the composition is used to store hydrogen, its hydrogen content can be found simply by measuring P.sub.H.sbsb.2 and determining H/M from the isothermic function of the composition.
- Research Organization:
- WESTINGHOUSE SAVANNAH RIVER CO
- DOE Contract Number:
- AC09-89SR18035
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5460745
- OSTI ID:
- 870128
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/252/206/423/
activated
adjusted
amounts
below
chemical
chosen
composition
composition comprises
compositions
comprises
constituents
content
contribute
degassing
determining
equilibrium
equimolar
equimolar amounts
exposing
flat
flat plate
found
function
heating
hydride
hydride composition
hydrides
hydrogen
hydrogen content
hydrogen sorption
increases
increasing
individual
integrity
isothermic
isotherms
linearly
measuring
method
mixture
molar amount
molar amounts
nearly
overall
plateaus
preferably
preserved
pressure
pressure increase
pressure increases
regions
sbsb
selecting
series
simply
softening
softening temperature
sorption
sorption isotherms
store
storing
storing hydrogen
structural
structural integrity
substantially
substantially flat
temperature
temperature below
varying
activated
adjusted
amounts
below
chemical
chosen
composition
composition comprises
compositions
comprises
constituents
content
contribute
degassing
determining
equilibrium
equimolar
equimolar amounts
exposing
flat
flat plate
found
function
heating
hydride
hydride composition
hydrides
hydrogen
hydrogen content
hydrogen sorption
increases
increasing
individual
integrity
isothermic
isotherms
linearly
measuring
method
mixture
molar amount
molar amounts
nearly
overall
plateaus
preferably
preserved
pressure
pressure increase
pressure increases
regions
sbsb
selecting
series
simply
softening
softening temperature
sorption
sorption isotherms
store
storing
storing hydrogen
structural
structural integrity
substantially
substantially flat
temperature
temperature below
varying