Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | Materials Research Society Symposium Proceedings |
| Pages | 9-14 |
| Number of pages | 6 |
| Volume | 927 |
| Publication status | Published - 2006 |
| Event | 2006 MRS Spring Meeting - San Francisco, CA, United States Duration: Apr 17 2006 → Apr 21 2006 |
Other
| Other | 2006 MRS Spring Meeting |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 4/17/06 → 4/21/06 |
Fingerprint
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
Mechanistic studies of hydrogen release from solid amine borane materials. / Bowden, Mark; Kemmitt, Tim; Shaw, Wendy; Hess, Nancy; Linehan, John; Gutowski, Maciej; Schmid, Benjamin; Autrey, Tom.
Materials Research Society Symposium Proceedings. Vol. 927 2006. p. 9-14.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
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
Y1 - 2006
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.
UR - http://www.scopus.com/inward/record.url?scp=33947686578&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947686578&partnerID=8YFLogxK
M3 - Conference contribution
SN - 1558998845
SN - 9781558998841
VL - 927
SP - 9
EP - 14
BT - Materials Research Society Symposium Proceedings
ER -