Facile synthesis and regeneration of Mg(BH4)(2) by high energy reactive ball milling of MgB2

TitleFacile synthesis and regeneration of Mg(BH4)(2) by high energy reactive ball milling of MgB2
Publication TypeJournal Article
Year of Publication2013
AuthorsGupta S, Hlova IZ, Kobayashi T, Denys RV, Chen F, Zavaliy IY, Pruski M, Pecharsky VK
Journal TitleChemical Communications
Volume49
Pages828-830
Date Published01/28
Type of ArticleArticle
ISBN Number1359-7345
Accession NumberWOS:000312505500021
Keywordsdehydrogenation, hydrogen storage, SAMPLES
Abstract

We report direct hydrogenation of MgB2 in a planetary ball mill. Magnesium borohydride, Mg(BH4)(2), and various polyhedral borane anion salts have been synthesized at pressures between 50 and 350 bar H-2 without the need for subsequent isothermal hydrogenation at elevated temperature and pressure. The obtained products release similar to 4 wt% H-2 below 390 degrees C, and a major portion of Mg(BH4)(2) transforms back to MgB2 at around 300 degrees C, demonstrating the possibility of reversible hydrogen storage in an Mg(BH4)(2)-MgB2 system.

URL<Go to ISI>://WOS:000312505500021
DOI10.1039/c2cc36580d