Method for converting nitrogen into ammonia gas through metal hydride

The invention discloses a method for converting nitrogen into ammonia gas through metal hydride, which comprises the following steps: stirring a magnesium-based hydrogen storage material MgH2, a composite magnesium-based hydrogen storage material and an activated aluminum oxide supported catalyst in an argon atmosphere, so that the MgH2 and the composite magnesium-based hydrogen storage material are adsorbed into a pore structure of the activated aluminum oxide supported catalyst, the loaded catalyst for adsorbing MgH2 and the composite magnesium hydrogen storage material is obtained; nitrogen and a supported catalyst for adsorbing MgH2 and the composite magnesium hydrogen storage material react at the temperature of 400-600 DEG C to obtain NH3 gas. The conversion efficiency is high, the required reaction conditions are not harsh, the reaction can be carried out only at high temperature and normal pressure, and the purposes of saving and emission reduction are achieved. 本发明公开一种氮气通过金属氢化物转化为氨气的方法，包括如下步骤：将镁系储氢材料