Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 +

Maciej Gutowski, Rafal Bachorz, Tom Autrey, John Linehan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ammonia borane (AB), NH3BH3, is a promising material for hydrogen storage in view of favorable gravimetric and volumetric density of hydrogen. An on-board rehydrogenation of spent material has not been demonstrated yet for AB. There are, however, ways to improve the thermodynamics of hydrogen release from AB. First, one can control the chemical nature of products of the dehydrogenation step. This approach is studied through confinement of AB in nanoporous templates. The second way to improve the thermodynamics of hydrogen release is to modify the reactant. Ammonia borane is not the only compound with the empirical formula NBH6. It was demonstrated in a series of experiments that there was another compound, diammoniate of diborane (DADB). The different properties of AB, DADB, and DBDA might be critical for hydrogen storage in the NBH materials. In particular, the thermodynamic stabilities of DADB, DBDA, and AB might be different. The properties of molecular complexes (AB)2, DADB, DBDA are characterized based on the results of electronic structure calculations. This is an abstract of a paper presented at the 230th ACS National Meeting (Washington, DC 8/28/2005-9/1/2005).

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Volume230
Publication statusPublished - 2005
Event230th ACS National Meeting - Washington, DC, United States
Duration: Aug 28 2005Sep 1 2005

Other

Other230th ACS National Meeting
CountryUnited States
CityWashington, DC
Period8/28/059/1/05

Fingerprint

Boranes
Ammonia
Hydrogen
Hydrogen storage
Thermodynamics
Dehydrogenation
Electronic structure
Thermodynamic stability
diborane

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Gutowski, M., Bachorz, R., Autrey, T., & Linehan, J. (2005). Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 + . In ACS National Meeting Book of Abstracts (Vol. 230)

Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 + . / Gutowski, Maciej; Bachorz, Rafal; Autrey, Tom; Linehan, John.

ACS National Meeting Book of Abstracts. Vol. 230 2005.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gutowski, M, Bachorz, R, Autrey, T & Linehan, J 2005, Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 + . in ACS National Meeting Book of Abstracts. vol. 230, 230th ACS National Meeting, Washington, DC, United States, 8/28/05.
Gutowski M, Bachorz R, Autrey T, Linehan J. Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 + . In ACS National Meeting Book of Abstracts. Vol. 230. 2005
Gutowski, Maciej ; Bachorz, Rafal ; Autrey, Tom ; Linehan, John. / Relative stability of (NH3BH3)2, [NH3-BH2-NH3]+ BH4-, and [BH3-NH2-BH3]- NH4 + . ACS National Meeting Book of Abstracts. Vol. 230 2005.
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N2 - Ammonia borane (AB), NH3BH3, is a promising material for hydrogen storage in view of favorable gravimetric and volumetric density of hydrogen. An on-board rehydrogenation of spent material has not been demonstrated yet for AB. There are, however, ways to improve the thermodynamics of hydrogen release from AB. First, one can control the chemical nature of products of the dehydrogenation step. This approach is studied through confinement of AB in nanoporous templates. The second way to improve the thermodynamics of hydrogen release is to modify the reactant. Ammonia borane is not the only compound with the empirical formula NBH6. It was demonstrated in a series of experiments that there was another compound, diammoniate of diborane (DADB). The different properties of AB, DADB, and DBDA might be critical for hydrogen storage in the NBH materials. In particular, the thermodynamic stabilities of DADB, DBDA, and AB might be different. The properties of molecular complexes (AB)2, DADB, DBDA are characterized based on the results of electronic structure calculations. This is an abstract of a paper presented at the 230th ACS National Meeting (Washington, DC 8/28/2005-9/1/2005).

AB - Ammonia borane (AB), NH3BH3, is a promising material for hydrogen storage in view of favorable gravimetric and volumetric density of hydrogen. An on-board rehydrogenation of spent material has not been demonstrated yet for AB. There are, however, ways to improve the thermodynamics of hydrogen release from AB. First, one can control the chemical nature of products of the dehydrogenation step. This approach is studied through confinement of AB in nanoporous templates. The second way to improve the thermodynamics of hydrogen release is to modify the reactant. Ammonia borane is not the only compound with the empirical formula NBH6. It was demonstrated in a series of experiments that there was another compound, diammoniate of diborane (DADB). The different properties of AB, DADB, and DBDA might be critical for hydrogen storage in the NBH materials. In particular, the thermodynamic stabilities of DADB, DBDA, and AB might be different. The properties of molecular complexes (AB)2, DADB, DBDA are characterized based on the results of electronic structure calculations. This is an abstract of a paper presented at the 230th ACS National Meeting (Washington, DC 8/28/2005-9/1/2005).

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