Effect of additives on the thermolysis of ammonia borane

David J. Heldebrant, Tom Autrey, John C. Linehan, Donald M. Camaioni, Scot D. Rassat, Feng Zheng

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

Abstract

Ammonia borane (AB) is an attractive hydrogen storage material with high gravimetric and volumetric density of hydrogen. The thermolysis of solid ammonia borane follows sigmoidal kinetics with an "induction period" prior to rapid hydrogen release, generating a complex mixture of spent fuel products. We present evidence for the induction period involving isomerization of AB into the diammoniate of diborane (DADB). The induction period is substantially decreased with the addition of DADB. The induction period is also dependent on AB purity and temperature. Reducing the induction period and enhancing the rate of hydrogen release ultimately makes AB an attractive hydrogen storage material for fuel applications. This study profiles the mechanism of the thermolysis of AB, the effect of AB purity and the effect of chemical additives on the induction period and rates of dehydrogenation of AB.

Original languageEnglish
Title of host publication234th ACS National Meeting, Abstracts of Scientific Papers
Publication statusPublished - Dec 31 2007
Event234th ACS National Meeting - Boston, MA, United States
Duration: Aug 19 2007Aug 23 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other234th ACS National Meeting
CountryUnited States
CityBoston, MA
Period8/19/078/23/07

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Heldebrant, D. J., Autrey, T., Linehan, J. C., Camaioni, D. M., Rassat, S. D., & Zheng, F. (2007). Effect of additives on the thermolysis of ammonia borane. In 234th ACS National Meeting, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).