Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1283619 | International Journal of Hydrogen Energy | 2008 | 7 Pages |
Abstract
We have investigated the ball-milling (5–45 h) followed by dehydrogenation kinetics of LiNH2–MgH2 mixture. A new result of ball-milling reveals the formation of Mg(NH2)2 for mixtures ball-milled for more than 15 h. The desorption kinetics has been found to improve appreciably by increasing the duration of milling from 5 to 45 h. This enhancement is attributed to formation of Mg(NH2)2 during this process. It was found that the Mg(NH2)2 form through the reaction 2LiNH2 + MgH2 → Mg(NH2)2 + 2LiH. The phase and microstructural characterizations have been done through X-ray diffraction, IR-spectrometry, transmission and scanning electron microscopy. Correlation between particle size and hydrogenation behavior has also been investigated.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Rohit R. Shahi, T.P. Yadav, M.A. Shaz, O.N. Srivastava,