info:eu-repo/semantics/article
Efficient synthesis of alkali borohydrides from mechanochemical reduction of borates using magnesium-aluminum-basedwaste
Fecha
2019-10Registro en:
Le, Thi Thu; Pistidda, Claudio; Puszkiel, Julián Atilio; Milanese, Chiara; Garroni, Sebastiano; et al.; Efficient synthesis of alkali borohydrides from mechanochemical reduction of borates using magnesium-aluminum-basedwaste; Multidisciplinary Digital Publishing Institute; Metals; 9; 10; 10-2019; 1-17
2075-4701
CONICET Digital
CONICET
Autor
Le, Thi Thu
Pistidda, Claudio
Puszkiel, Julián Atilio
Milanese, Chiara
Garroni, Sebastiano
Emmler, Thomas
Capurso, Giovanni
Gizer, Gökhan
Klassen, Thomas
Dornheim, Martin
Resumen
Lithium borohydride (LiBH4) and sodium borohydride (NaBH4) were synthesized via mechanical milling of LiBO2, and NaBO2 with Mg-Al-based waste under controlled gaseous atmosphere conditions. Following this approach, the results herein presented indicate that LiBH4 and NaBH4 can be formed with a high conversion yield starting from the anhydrous borates under 70 bar H2. Interestingly, NaBH4 can also be obtained with a high conversion yield by milling NaBO2·4H2O and Mg-Al-based waste under an argon atmosphere. Under optimized molar ratios of the starting materials and milling parameters, NaBH4 and LiBH4 were obtained with conversion ratios higher than 99.5%. Based on the collected experimental results, the influence of the milling energy and the correlation with the final yields were also discussed.