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

Marina Chong; Abhi Karkamkar; Tom Autrey; Shinichi Orimo; Satish Jalisatgi; Craig M. Jensen

doi:10.1039/c0cc03461d

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

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

Research output: Contribution to journal › Article › peer-review

142 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 language	English
Pages (from-to)	1330-1332
Number of pages	3
Journal	Chemical Communications
Volume	47
Issue number	4
DOIs	https://doi.org/10.1039/c0cc03461d
Publication status	Published - 2011 Jan 10

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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.",

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T1 - Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate conditions

AU - Chong, Marina

AU - Karkamkar, Abhi

AU - Autrey, Tom

AU - Orimo, Shinichi

AU - Jalisatgi, Satish

AU - Jensen, Craig M.

PY - 2011/1/10

Y1 - 2011/1/10

N2 - 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.

AB - 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.

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

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