Direct synthesis of hydride compounds using a titanium aluminate dopant
OwnerKarl J. Gross, Eric H. Majzoubinventors
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Abstract
A method for directly preparing alkali metal aluminum hydrides such as NaAlH4 and Na3AlH6 from either the alkali metal or its hydride, and aluminum. The hydride thus prepared is doped with a small portion of TiAl3, in order to improve the reaction kinetics of the hydride compound thus formed. The process provides for mechanically mixing the dry reagents under an inert atmosphere followed by charging the mixed materials with high pressure hydrogen while heating the mixture to about 125° C.
Claims24
A method of producing one or more complex hydride compounds capable of reversible hydrogenation, comprising:
- mechanically mixing an alkali metal hydride with aluminum powder and a powdered form of TiAl3 to provide a powder mixture;
- and
- hydrogenating said powder mixture at an elevated temperature and pressure to provide an alkali metal-aluminum hydride compound.
A method of producing one or more complex hydride compounds capable of reversible hydrogenation, comprising:
- mechanically mixing a comminuted form of an alkali metal, with aluminum powder and a powdered form of TiAl3 to provide a powder mixture;
- and
- hydrogenating said powder mixture at an elevated temperature and pressure to provide an alkali metal-aluminum hydride compound.
Dependencies are inferred from the claim text.