Issue 4, 2011
From the journal:

Chemical Communications

Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions†‡

Marina Chong,a   Abhi Karkamkar,b   Tom Autrey,*b   Shin-ichi Orimo,c   Satish Jalisatgid  and  Craig M. Jensen*a  

* Corresponding authors

a Department of Chemistry, University of Hawaii at Manoa, 2545 McCarthy Mall, Honolulu, USA
E-mail: jensen@hawaii.edu
Fax: +1 808-956-5908
Tel: +1 808-956-2769

b Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, USA
E-mail: tom.autrey@pnl.gov
Tel: +1 509-375-37927

c Institute for Materials Research, Tohoku University, Sendai, Japan

d International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, USA

Abstract

Thermal decomposition of magnesium borohydride, Mg(BH4)2, in the solid state was studied by a combination of PCT, TGA/MS and NMR spectroscopy. Dehydrogenation of Mg(BH4)2 at 200 °C en vacuo results in the highly selective formation of magnesium triborane, Mg(B3H8)2. This process is reversible at 250 °C under 120 atm H2. Dehydrogenation at higher temperature, >300 °C under a constant argon flow of 1 atm, produces a complex mixture of polyborane species. A borohydride condensation mechanism involving metal hydride formation is proposed.

Graphical abstract: Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions

  • This article is part of the themed collection: Hydrogen
About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C0CC03461D
Article type
Communication
Submitted
25 Aug 2010
Accepted
28 Oct 2010
First published
24 Nov 2010

Chem. Commun., 2011,47, 1330-1332

Permissions

Request permissions

Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions

M. Chong, A. Karkamkar, T. Autrey, S. Orimo, S. Jalisatgi and C. M. Jensen, Chem. Commun., 2011, 47, 1330 DOI: 10.1039/C0CC03461D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements