Synthesis of amorphic and hexagonal boron nitride via high temperature treatment of NH 3 BH 3 and Li(BH 3 NH 2 BH 2 NH 2 BH 3 )
Thermal decomposition of NH BH and Li(BH NH BH NH BH ) was investigated at temperatures up to 1000 °C under various conditions with an inert atmosphere. It was found that complete dehydrogenation of ammonia borane towards amorphous boron nitride (a-BN) occurs at 850 °C when using monel reactors or a...
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Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2024-05, Vol.53 (19), p.8135-8140 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Thermal decomposition of NH
BH
and Li(BH
NH
BH
NH
BH
) was investigated at temperatures up to 1000 °C under various conditions with an inert atmosphere. It was found that complete dehydrogenation of ammonia borane towards amorphous boron nitride (a-BN) occurs at 850 °C when using monel reactors or at 1000 °C with the hot isostatic pressing method (HIP), which is significantly lower than was earlier reported. Li(BH
NH
BH
NH
BH
) was found to decompose towards hexagonal boron nitride (h-BN) at 1000 °C with the HIP method but at 850 °C in monel reactors towards a mixture of a-BN and h-BN. The findings are confirmed by Fourier-transform infrared spectroscopy (FTIR), powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM). |
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ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/D4DT00682H |