Magnesium alanate-a material for reversible hydrogen storage?

摘要: Abstract Magnesium alanate was synthesized in a metathesis reaction of magnesium chloride and sodium followed by purification. The material obtained sufficiently pure it investigated X-ray diffraction (XRD) thermogravimetry (TG) mass spectrometry (MS) the evolved gas, respectively. Thermal analysis showed decomposition with release hydrogen proceeding two major steps. Measured vacuum, peak temperature first step found to be 163 °C residue at 200 °C consisted MgH 2 Al which continues transforms into an 3 Mg /Al mixture higher temperatures. In 6.6 wt.% released. To enhance kinetics decomposition, doped titanium based promoter ball milled for up 100 min, resulting significantly reduced temperature. First results on determining thermodynamic properties indicate equilibrium desorption pressures range AB 5 compounds. total, promising determined so far have inspired further investigations thermodynamics, reabsorption compound.