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- W2069598434 abstract "The hydrogen storage properties of 2NaBH4 + MgH2 system were studied. It was found that the presence of MgH2 could destabilize the decomposition of NaBH4, decreasing the dehydrogenation temperature about 40 °C compared with the pure NaBH4. It is believed that the formation of MgB2 upon dehydrogenation stabilizes the dehydrogenated state and, thereby, destabilizes the NaBH4. For the desorption the following two-step reaction was observed: 2NaBH4 + MgH2 → 2NaBH4 + Mg + H2 → 2NaH + MgB2 + 4H2. Furthermore, various catalysts such as TiF3, TiO2, Zr, Si and BCC alloy were doped to the NaBH4–MgH2 system. Among these catalysts, TiF3 exhibited the optimum behavior in terms of fast kinetics and lowering the dehydrogenation temperature of the NaBH4–MgH2 system. The rehydrogenation experiments of TiF3-doped NaBH4–MgH2 system were investigated at 600 °C with an initial hydrogen pressure of about 4 MPa. It showed that 5.89 wt.% hydrogen was rehydrogenated within 12 h. XRD results demonstrated the formation of NaBH4 and MgH2 in the rehydrogenated sample." @default.
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- W2069598434 date "2009-06-01" @default.
- W2069598434 modified "2023-10-07" @default.
- W2069598434 title "Enhanced hydrogen storage performances of NaBH4–MgH2 system" @default.
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- W2069598434 doi "https://doi.org/10.1016/j.jallcom.2009.01.012" @default.
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