Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7707300 | International Journal of Hydrogen Energy | 2018 | 6 Pages |
Abstract
The de-/rehydrogenation features of the 6LiBH4/SrF2 reactive hydride system have been systematically investigated. It was found that the thermal stability of LiBH4 can be reduced markedly by combining it with SrF2. Dehydrogenation of the 6LiBH4/SrF2 system proceeds via the 6LiBH4 + SrF2 â SrB6 + 2LiF + 4LiH + 10H2 reaction, which involves SrH2 as the intermediate product. The dehydrogenation enthalpy change was experimentally determined to be 52 kJ/mol H2 based on the P-C isotherm analysis. For rehydrogenation, LiBH4 and SrF2 were regenerated along with LiSrH3 at 450 °C under â¼8 MPa hydrogen pressure; thus, approximately 5.2 wt% of hydrogen can be released during the second dehydrogenation process.
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Authors
S.X. Zhao, C.Y. Wang, D.M. Liu, Q.J. Tan, Y.T. Li, T.Z. Si,