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Behavior of Lithium Amide Under Argon Plasma
Jiaqi Wen1,2, Hong Wen1, Han Wu1,2
1Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
Chemsuschem
|April 24, 2024
Summary
Plasma treatment of lithium amide (LiNH2) yields distinct products like Li colloids, N2, and H2. This unique interaction enables a novel chemical loop for ammonia decomposition.
Area of Science:
- Materials Science
- Plasma Chemistry
- Chemical Engineering
Background:
- Alkali and alkaline earth metal amides are functional materials with applications in hydrogen storage and chemical transformations.
- Lithium amide (LiNH2) is a representative material whose thermal chemistry is well-studied, but its interaction with plasma is largely unknown.
Purpose of the Study:
- To investigate the interaction between plasma and lithium amide (LiNH2).
- To explore a novel chemical loop for ammonia decomposition mediated by LiNH2.
Main Methods:
- Plasma treatment of LiNH2 in an Argon (Ar) flow at ambient conditions.
- Analysis of reaction products using UV-vis absorption, Electron Paramagnetic Resonance (EPR), and gas analysis.
Main Results:
- Plasma treatment resulted in the formation of lithium (Li) colloids, nitrogen (N2), and hydrogen (H2).
- The reaction pathway under plasma differs significantly from thermal processes.
- A chemical loop for ammonia decomposition was successfully demonstrated.
Conclusions:
- Plasma treatment offers a unique pathway for LiNH2 reactions, distinct from thermal methods.
- This study demonstrates a novel application of LiNH2 in plasma-mediated ammonia decomposition.
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