Promotion of hydrogen release from ammonia borane with mechanically activated hexagonal boron nitride

Doinita Neiner, Abhijeet Karkamkar, John C. Linehan, Bruce Arey, Tom Autrey, Susan M. Kauzlarich

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Nanoscale hexagonal BN additive for ammonia borane, AB, is shown to decrease the onset temperature for hydrogen release. Both the nano-BN and the AB:nano-BN samples are prepared by ball milling. The materials are characterized by X-ray powder diffraction, 11B muclear magnetic resonance, thermogravimetric analysis, differential scanning calorimetry, and mass spectrometry, and the hydrogen release is measured by a volumetric gas burette system. Several effects of the mixtures of AB:nano-BN are shown to be beneficial in comparison with neat AB. These are the decrease of the dehydrogenation temperature, the decrease in NH 3 formation, as well as the decrease of the exothermicity of hydrogen release with increasing the nano-BN concentration.

Original languageEnglish
Pages (from-to)1098-1103
Number of pages6
JournalJournal of Physical Chemistry C
Volume113
Issue number3
DOIs
Publication statusPublished - Jan 22 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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