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The metal-hydride method of purification of hydrogen from the contaminating gases is
the most promising one along with the method of diffusion through palladium alloy membranes.
Both of these methods are characterized by the high selectivity, depth of purification,
and their technological simplicity.
The applicability of various hydride forming intermetal compounds (IMC) for purification
of hydrogen from contaminating gases depends on their adsorption, equilibrium and kinetic
characteristics. To determine these characteristics we measured hydrogen adsorption -
desorption isotherms, describing the relation between pressure, temperature and chemical
composition, for several IMCs including Zr0.7Ti0.3Mn2 and
Zr1-xTixCoNi. We also investigated the hydrogen gas purification process itself.
It consisted of three steps:
- adsorption of hydrogen on IMC by passing the gas mix through it.
- removal of contaminants by pumping.
- recovery of pure hydrogen gas by its desorption from IMC hydride.
The obtained data were used in the creating of hydrogen isotopes purification system for the muon catalysis experiments.
“Preprint LNPI #1730, 1991, Leningrad;
“LNPI Research Report”, 1990-1991
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