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TitleHigh capacity hydrogen storage in a hybrid ammonia borane-lithium amide material†
Publication TypeJournal Article
Year of Publication2009
AuthorsGraham, K.R., Kemmitt T., and Bowden M.E.
JournalEnergy and Environmental Science
Pagination706 - 710
Date Published2009
ISSN17545692 (ISSN)
KeywordsAmides, Ammonia, Ammonia borane, Amorphous polymers, Decomposition products, Deuterium, Deuterium labelling, Heating, High capacity, hybrid, Hybrid materials, hydrogen, Hydrogen gas pressure, Hydrogen release, Hydrogen storage, Insectivora, Lithium, Lithium amide, Mass spectrometry, Reaction sequences, Released gas, solvent, Solventless
AbstractThe direct (solventless) reaction of lithium amide with ammonia borane is described and is demonstrated to form a new hybrid material approximating to LiNH2BH3NH3. This material rapidly loses 3.2 mole equivalents of hydrogen, (11.9 wt%) on heating to 250 °C, with the most rapid hydrogen release occurring at temperatures as low as 60 °C. The product was an insoluble, amorphous polymer with the general formula -(NLi-BNH2)n- which did not rehydrogenate directly on exposure to hydrogen gas pressure. The hybrid material and its decomposition products were characterised by solid state 11B NMR. Selective deuterium labelling helped to elucidate a reaction sequence for the hydrogen release using mass spectrometry of the released gases. © The Royal Society of Chemistry 2009.

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