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Alkali metal hydroxide and hydride composite systems contain both protic (H bonded with O) and hydridic hydrogen. The interaction of these two types of hydrides produces hydrogen. The enthalpy of dehydrogenation increased with the increase of atomic number of alkali metals, i.e., −23 kJ/molH 2 for LiOH-LiH, 55.34 kJ/molH 2 for NaOH-NaH and 222 kJ/molH 2 for KOH-KH. These thermodynamic...
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