Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane

Ashley C. Stowe, Abhi Karkamkar, Benjamin A. Schmid, Wendy J. Shaw, John C. Linehan, Liyu Li, Tom Autrey

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

Abstract

The hydrogen storage capabilities of bulk ammonia borane make this material a promising candidate for use in the hydrogen economy; however, dehydrogenation thermodynamics and kinetics must improve before I will be considered for practical applications. Preparation of nano-phase ammonia borane enhances the hydrogen storage and release properties and prevents borazine formation, although the gravimetric density is decreased by a factor of two. Higher loading samples of ammonia borane encapsulated in mesoporous silica (nano-phase AB:SBA-15) was prepared in an effort to increase he gravimetric density while maintaining the enhanced kinetics and thermodynamics of the nano-phase material. At ratios greater than 1:1 by mass, borazine formation is observed similar to the bulk material. Further, as the ratio of ammonia borane to mesoporous silica increases, the onset for hydrogen release increases toward the bulk dehydrogenation temperature.

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)

Fingerprint Dive into the research topics of 'Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane'. Together they form a unique fingerprint.

  • Cite this

    Stowe, A. C., Karkamkar, A., Schmid, B. A., Shaw, W. J., Linehan, J. C., Li, L., & Autrey, T. (2006). Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane. In Abstracts of Papers - 232nd American Chemical Society Meeting and Exposition (ACS National Meeting Book of Abstracts; Vol. 232).