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No.3769395
По получению гидрида нашел только такое:
>Alane is a very attractive system for hydrogen storage, being a simple binary hydride containing 10.1 wt % hydrogen with a theoretical H density of 148 g/L, and possessing a higher volumetric hydrogen capacity than liquid hydrogen. The material is marginally stable at room temperature, releasing H2 between 60 and 140° C. Aluminum is cheap, safe and plentiful and is widely used in 21st Century technologies. Alane thus clearly satisfies four of the five DOE criteria. According to the understanding prior to this invention, the major drawback is its lack of reversibility: direct combination of Al and H2 requires draconian pressures--in excess of 25 kbar. The thermodynamic properties of AlH3 vitiate conventional gas-solid synthesis: AlH3 is thermochemically on the cusp with respect to decomposition to Al and H2 (the α-, β- and γ-phases of AlH3 have ΔHdehyd values of ca. +6, -4 and +1 kJ mol-1, respectively). Thus, even at very high pressures of H2, the modest thermal input needed to overcome the activation barrier will place the system thermodynamically in favor of the elements
>Al+1.5H2⇄AlH3
В любом случае равновесие реакции смещено в сторону образования молекулярного водорода (константы скоростей образования молекулярного водорода и гидрида алюминия скорее всего отличаются на порядки), поскольку молекулярный водород сам по себе очень стабилен, только очень высокое давление (25 kbar.) способно сдвинуть равновесие в сторону образования AlH3.
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