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 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 publicationACS National Meeting Book of Abstracts
Volume232
Publication statusPublished - 2006
Event232nd American Chemical Society Meeting and Exposition - San Francisco, CA, United States
Duration: Sep 10 2006Sep 14 2006

Other

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

Fingerprint

Boranes
Dehydrogenation
Ammonia
Hydrogen storage
Silicon Dioxide
Hydrogen
Thermodynamics
Kinetics
Nanostructured materials
Temperature
borazine

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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

Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane. / Stowe, Ashley C.; Karkamkar, Abhi; Schmid, Benjamin A.; Shaw, Wendy J.; Linehan, John; Li, Liyu; Autrey, Tom.

ACS National Meeting Book of Abstracts. Vol. 232 2006.

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

Stowe, AC, Karkamkar, A, Schmid, BA, Shaw, WJ, Linehan, J, Li, L & Autrey, T 2006, Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane. in ACS National Meeting Book of Abstracts. vol. 232, 232nd American Chemical Society Meeting and Exposition, San Francisco, CA, United States, 9/10/06.
Stowe AC, Karkamkar A, Schmid BA, Shaw WJ, Linehan J, Li L et al. Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane. In ACS National Meeting Book of Abstracts. Vol. 232. 2006
Stowe, Ashley C. ; Karkamkar, Abhi ; Schmid, Benjamin A. ; Shaw, Wendy J. ; Linehan, John ; Li, Liyu ; Autrey, Tom. / Effect of higher loading on the dehydrogenation properties of nano-phase ammonia borane. ACS National Meeting Book of Abstracts. Vol. 232 2006.
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