Issue 8, 2013
From the journal:

Chemical Communications

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

Shalabh Gupta,a   Ihor Z. Hlova,ab   Takeshi Kobayashi,a   Roman V. Denys,c   Fu Chen,a   Ihor Y. Zavaliy,c   Marek Pruski*ad  and  Vitalij K. Pecharsky*ab  

* Corresponding authors

a Ames Laboratory, Iowa State University, Ames, IA 50011, USA

b Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA
E-mail: vitkp@ameslab.gov

c Physico-Mechanical Institute NAS Ukraine, 5 Naukova Str., 79601 Lviv, Ukraine

d Department of Chemistry, Iowa State University, Ames, IA 50011, USA
E-mail: mpruski@iastate.edu

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 H2 without the need for subsequent isothermal hydrogenation at elevated temperature and pressure. The obtained products release ∼4 wt% H2 below 390 °C, and a major portion of Mg(BH4)2 transforms back to MgB2 at around 300 °C, demonstrating the possibility of reversible hydrogen storage in an Mg(BH4)2–MgB2 system.

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

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DOI
https://doi.org/10.1039/C2CC36580D
Article type
Communication
Submitted
10 Sep 2012
Accepted
03 Dec 2012
First published
03 Dec 2012

Chem. Commun., 2013,49, 828-830

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

S. Gupta, I. Z. Hlova, T. Kobayashi, R. V. Denys, F. Chen, I. Y. Zavaliy, M. Pruski and V. K. Pecharsky, Chem. Commun., 2013, 49, 828 DOI: 10.1039/C2CC36580D

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