Abstract
To enhance the efficient and rate of magnesium/seawater reaction, Mg-based hydro-reactive materials were prepared via a multiple variable speed cycle process by high-energy milling method in inert atmosphere. Scanning electron microscope (SEM), thermogravimetry (TG) and specific surface test were used to characterize the microstructure and oxidation characteristic of the materials. The real-time amount of hydrogen produced by reaction of Mg-based materials and seawater was recorded using an independent designed metal/water reaction device. The hydro-reactivity of Mg-based hydro-reactive metal materials was studied. Results show that the high-energy milling can significantly enhance the reaction activity of Mg-based materials and seawater. The reaction efficiency of magnesium powder after ball mill reaches 80.5%. Addition of catalyst in the process of ball mill can further enhance the reaction activity of Mg-based hydro-reactive materials. The total yield of reaction can reach 91.1%. The hydrogen generation reaction rate in the fast stage is 741 mL·min-1·g-1.
Original language | English |
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Pages (from-to) | 197-201 |
Number of pages | 5 |
Journal | Hanneng Cailiao/Chinese Journal of Energetic Materials |
Volume | 22 |
Issue number | 2 |
DOIs | |
Publication status | Published - Apr 2014 |
Keywords
- Catalyst
- High-energy milling
- Hydro-reactivity
- Mg-based hydro-reactive materials
- Physical chemistry