Hydrogen desorption properties of Li–BN–H system synthesized by mechanical milling

Wu, Chengzhang; Miyaoka, Hiroki; Ichikawa, Takayuki; Kojima, Yoshitsugu

doi:10.1016/j.ijhydene.2008.01.022

Cited by 18 publications

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“…It has been shown that such dangling bonds trap ammonia and hydrogen to form BN-NH x and BN-H x . 27 If that is the case than one can imagine that those BN-NH x could act as basic sites, which can react with DADB to produce cycloborazanes that are the precursors for borazine. 28 Alternatively, the B site in nano-BN can act as a Lewis acid.…”

Section: Resultsmentioning

confidence: 99%

“…It has recently been reported that ball milling can induce dangling bonds in BN. It has been shown that such dangling bonds trap ammonia and hydrogen to form BN-NH x and BN-H x . If that is the case than one can imagine that those BN-NH x could act as basic sites, which can react with DADB to produce cycloborazanes that are the precursors for borazine .…”

Section: Resultsmentioning

confidence: 99%

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Promotion of Hydrogen Release from Ammonia Borane with Mechanically Activated Hexagonal Boron Nitride

et al. 2008

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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 NH3 formation, as well as the decrease of the exothermicity of hydrogen release with increasing the nano-BN concentration.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%