Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1611506 | Journal of Alloys and Compounds | 2014 | 6 Pages |
Abstract
Dehydrogenation behavior of LiAlH4-MgH2 composites was investigated by using thermal gravimetric analysis (TGA) and in situ synchrotron X-ray diffraction (XRD) technique. The experimental results showed that MgH2 could play a catalytic role in lowing the initial dehydrogenation temperature of LiAlH4. Besides, MgH2 could be destabilized by the dehydrogenation reaction products of LiAlH4. The initial dehydrogenation temperature of LiAlH4-MgH2 composites was as low as 145 °C and MgH2 could decompose below 300 °C. The compounds such as LiMgAlH6, Al3Mg2, Al12Mg17 and Li0.92Mg4.08 formed during dehydrogenation process suggested some mutual reactions proceeded between LiAlH4 and MgH2.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Wei-Che Hsu, Cheng-Hsien Yang, Chia-Yen Tan, Wen-Ta Tsai,