Multi-stage synthesis of magnesium nitride using an atmospheric-pressure dielectric barrier discharge
Shungo Zen*, Yingwen Huang, Nozomi Takeuchi
* The author to whom correspondence should be addressed.
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, 2-12-1-S3-3, Ookayama, Meguro-ku, Tokyo, Japan
A multi-stage dielectric barrier discharge (DBD) was used to elucidate the reaction pathway for synthesizing Mg3N2 from MgO, nitrogen, and hydrogen using atmospheric pressure plasma. Recently, ammonia has been considered as a promising carbon-free material for hydrogen storage and carrier owing to its high hydrogen density. However, the extensive use of ammonia as an energy carrier has problems with respect to transportation and storage because of its toxicity, odor, and combustibility. Therefore, we consider that Mg3N2 can solve these problems and focus on Mg3N2 synthesis by nitridation of MgO using a DBD in a N2 and H2 atmosphere instead of directly synthesizing ammonia. By investigating the Mg3N2 synthesis pathway using a multi-stage atmospheric pressure plasma, it is considered that H atoms and NH radicals reduce MgO and promote nitriding.
Keywords - Ammonia carrier, dielectric barrier discharge, Mg3N2 synthesis, non-thermal plasma.