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- W2912482825 abstract "Abstract In this study, the hydrogenation performance of NaBH4 was modified by the addition of 10 wt% MgFe2O4 as the catalyst. The NaBH4 + 10 wt% of MgFe2O4 sample was prepared by a ball milling technique. The onset decomposition temperature of MgFe2O4-doped NaBH4 was decreased to 323 °C and 483 °C for the first and second stage of dehydrogenation as compared to the milled NaBH4 (497 °C). The desorption kinetics study showed that the addition of MgFe2O4 caused the sample to had faster hydrogen desorption with a capacity of 6.2 wt% within 60 min while the milled NaBH4 had only released 5.3 wt% of hydrogen in the same period of time. For the isothermal absorption kinetics, the total amount of hydrogen absorbed by the milled NaBH4 was 3.7 wt% while the NaBH4 + 10 wt% MgFe2O4 sample showed better absorption characteristic with a total amount of 4.5 wt% of hydrogen within 60 min. The calculated desorption activation energy from the Kissinger plot of NaBH4 + 10 wt% MgFe2O4 sample was 187 kJ/mol which reduced by 28 kJ/mol than the milled NaBH4 (215 kJ/mol). The in-situ formation of MgB6 and Fe3O4 after the dehydrogenation process indicates that these new species were responsible for the improved hydrogenation performances of NaBH4." @default.
- W2912482825 created "2019-02-21" @default.
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- W2912482825 date "2019-03-01" @default.
- W2912482825 modified "2023-10-17" @default.
- W2912482825 title "Modifying the hydrogen storage performances of NaBH4 by catalyzing with MgFe2O4 synthesized via hydrothermal method" @default.
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- W2912482825 doi "https://doi.org/10.1016/j.ijhydene.2019.01.149" @default.
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