Aluminum methylamidoborane complexes: mechanochemical synthesis, structure, stability and reactive hydride composites
(2023) Sustainable Energy and Fuels — Vol. 7, p. 1119-1126 (2023)
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- Authors
Devillers, Michel 
- Abstract
- The methyl-substituted Al-based amidoborane Na[Al(CH3NHBH3)4] has been designed and synthesized as a potential candidate for hydrogen storage purposes. Its structure, as well as that of Na[AlH(CH3NHBH3)3], forming as an intermediate in mechanochemical synthesis, were determined by high-resolution powder X-ray diffraction. Synthesis of Na[Al(CH3NHBH3)4] requires much cheaper CH3NH2BH3 and undergoes under less harsh conditions compared to the unsubstituted analogue. Na[AlH(CH3NHBH3)3] is the first example of an Al-based compound containing both hydride and amidoborane species. Despite Na[Al(CH3NHBH3)4] is not suitable for hydrogen storage on its own, the reactive hydride composites (RHCs) made of Na[Al(CH3NHBH3)4] and 12 eqs. of NaH, or 6 eqs. of NaNH2 show the release of pure hydrogen at moderate temperatures, making this and similar systems interesting candidates for H-storage.
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Citations
Zhang, T., Steenhaut, T., Xiao Li, Devred, F., Devillers, M., & Filinchuk, Y. (2023). Aluminum methylamidoborane complexes: mechanochemical synthesis, structure, stability and reactive hydride composites. Sustainable Energy and Fuels, 7, 1119-1126. https://doi.org/10.1039/D2SE01558G (Original work published 2023)