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

Marina Chong, Abhi Karkamkar, Tom Autrey, Shin Ichi Orimo, Satish Jalisatgi, Craig M. Jensen

Research output: Contribution to journalArticle

114 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1330-1332
Number of pages3
JournalChemical Communications
Volume47
Issue number4
DOIs
Publication statusPublished - 2011 Jan 28

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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