Solid State Phase Transformations in LiAlH4 During High-Energy Ball-Milling

Mechanochemical processing of polycrystalline LiAlH4 revealed good stability of this complex aluminohydride during high-energy ball-milling in a helium atmosphere for up to 35 h. The decomposition of lithium aluminohydride into Li3AlH6, Al and H2 is observed during prolonged mechanochemical treatment for up to 110 h and is most likely associated with the catalytic effect of a vial material, iron, which is introduced into the hydride as a contaminant during mechanical treatment.

[1]  A. Załuska,et al.  Hydrogenation properties of complex alkali metal hydrides fabricated by mechano-chemical synthesis , 1999 .

[2]  E. C. Ashby,et al.  Thermal decomposition of complex metal hydrides , 1972 .

[3]  Craig M. Jensen,et al.  Advanced titanium doping of sodium aluminum hydride:: segue to a practical hydrogen storage material? , 1999 .

[4]  V. Pecharsky,et al.  Concerning the transformations of Ti3Ir alloy during high-energy ball-milling , 2000 .

[5]  K. Gross,et al.  In-situ X-ray diffraction study of the decomposition of NaAlH4 , 2000 .

[6]  R. Brand,et al.  Metal-doped sodium aluminium hydrides as potential new hydrogen storage materials , 2000 .

[7]  Klaus Yvon,et al.  Complex Transition‐Metal Hydrides , 1999 .

[8]  Jacques Huot,et al.  Synthesis of Na3AlH6 and Na2LiAlH6 by mechanical alloying , 1999 .

[9]  Craig M. Jensen,et al.  Hydrogen cycling behavior of zirconium and titanium–zirconium-doped sodium aluminum hydride , 1999 .

[10]  Irina G Konstanchuk,et al.  Interaction of alloys and intermetallic compounds obtained by mechanochemical methods with hydrogen , 1998 .

[11]  P. Claudy,et al.  Etude comparative des tetrahydro- et -deuteroaluminates de lithium LiAlH4, LiAlD4. I — Preparation, etude radiocristallographique et comportement thermique — Mise en evidence d'une variete metastable de LiAlD4 , 1985 .

[12]  B. Bogdanovic,et al.  Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials , 1997 .