Spectroscopic investigations of ammonium borohydride and diammoniate of diborane: Evaluating the potential of a hydrogen storage material

David J. Heldebrant, Ashley C. Stowe, Abhi Karkamkar, Nancy J. Hess, Maciej Gutowski, John C. Linehan, Tom Autrey

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

Abstract

Ammonium borohydride (NH4BH4) is extremely desirable as a solid hydrogen storage material because of its large hydrogen density by weight on the molecule (24%). Investigations of NH4BH4 have long been neglected since the first studies in the early 1950's by Schultz and others due to the short lifetime of NH4BH4 at standard temperature and pressure. In this work we focus our efforts on the chemical and physical properties of NH4BH4 to evaluate its potential as a hydrogen storage material. Discussed here, is full spectroscopic characterization of NH4BH4 and its degradation product diammoniate of diborane (DADB) using infrared spectroscopy and nuclear magnetic resonance as well as x-ray powder diffraction. Thermal analysis of NH4BH4 and DADB from differential scanning calorimetry and thermal gravimetric analysis coupled with a mass spectrometer is also presented. The stability, solubility, reactivity of NH4BH4 is discussed as well as mechanisms of degradation and hydrogen release.

Original languageEnglish
Title of host publicationAbstracts of Papers - 232nd American Chemical Society Meeting and Exposition
Publication statusPublished - Dec 1 2006
Event232nd American Chemical Society Meeting and Exposition - San Francisco, CA, United States
Duration: Sep 10 2006Sep 14 2006

Publication series

NameACS National Meeting Book of Abstracts
Volume232
ISSN (Print)0065-7727

Other

Other232nd American Chemical Society Meeting and Exposition
CountryUnited States
CitySan Francisco, CA
Period9/10/069/14/06

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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