TY - GEN
T1 - Mechanistic studies of hydrogen release from solid amine borane materials
AU - Bowden, Mark
AU - Kemmitt, Tim
AU - Shaw, Wendy
AU - Hess, Nancy
AU - Linehan, John
AU - Gutowski, Maciej
AU - Schmid, Benjamin
AU - Autrey, Tom
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Ammonia borane (NH3BH3) is a molecular solid with a high volumetric and gravimetric density of hydrogen. We report room temperature structural data which shows how the freely rotating NH3 and BH 3 groups allow a N-H...H-B dihydrogen bond in which hydrogen atoms on adjacent molecules are separated by only 1.90Å. The initial decomposition of ammonia borane at 80-100°C into (NH2BH2) n and H2 has been studied by in-situ nmr spectroscopy and kinetic studies using isotopic substitution. The reaction proceeds by a bimolecular pathway involving a [NH3BH2NH 3]+BH4- intermediate with an activation energy of 136kJmol-1.
AB - Ammonia borane (NH3BH3) is a molecular solid with a high volumetric and gravimetric density of hydrogen. We report room temperature structural data which shows how the freely rotating NH3 and BH 3 groups allow a N-H...H-B dihydrogen bond in which hydrogen atoms on adjacent molecules are separated by only 1.90Å. The initial decomposition of ammonia borane at 80-100°C into (NH2BH2) n and H2 has been studied by in-situ nmr spectroscopy and kinetic studies using isotopic substitution. The reaction proceeds by a bimolecular pathway involving a [NH3BH2NH 3]+BH4- intermediate with an activation energy of 136kJmol-1.
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M3 - Conference contribution
AN - SCOPUS:33947686578
SN - 1558998845
SN - 9781558998841
T3 - Materials Research Society Symposium Proceedings
SP - 9
EP - 14
BT - Hydrogen Storage Materials
T2 - 2006 MRS Spring Meeting
Y2 - 17 April 2006 through 21 April 2006
ER -