Nitrogen fixation by alkali and alkaline earth metal hydrides assisted by plasma

The chemical behaviors of alkali and alkaline earth metal hydrides including LiH, KH, MgH 2 , CaH 2 , and BaH 2 under nitrogen plasma differ significantly from one another, exhibiting an ammonia production trend that contrasts with that observed under thermal conditions. A prominent feature of KH is its ability to facilitate plasma-assisted N 2 fixation without generating H 2 byproduct, showing high atomic economy in utilization of hydride ions for N 2 reduction. The chemical behaviors of alkali and alkaline earth metal hydrides under nitrogen plasma differ significantly from one another, exhibiting an ammonia production trend that contrasts with that observed under thermal conditions.