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A step forward to the dehydrogenation reversibility of amine-borane adducts by coupling sodium and hydrocarbon groups

TitleA step forward to the dehydrogenation reversibility of amine-borane adducts by coupling sodium and hydrocarbon groups
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2015
AuthorsLeardini, F., Mirabile Gattia Daniele, Montone Amelia, Cuevas F., Perez-Mayoral E., Valero-Pedraza M.J., Bañares M.A., and Cantelli R.
JournalInternational Journal of Hydrogen Energy
Volume40
Pagination2763-2767
ISSN03603199
KeywordsAmidoboranes, Chemical hydride, Crystal structure, Desorption, Desorption process, Enthalpy, Hydrides, Hydrocarbon groups, Hydrogen, Hydrogen desorption, Hydrogen storage, Moderate temperature, Reaction enthalpies, Sodium, Sodium compounds, Solid-state hydrogen storage, Synthesis (chemical), Thermal desorption, X ray diffraction, X ray diffraction analysis
Abstract

Mechanochemistry has played an important role in the synthesis of many novel compounds, in particular within the field of materials for solid state hydrogen storage applications. This work investigates reactive milling of ethane 1,2-di-amineborane (EDAB) and sodium hydride which yields the evolution of one equivalent of hydrogen and the formation of a novel compound (named NaEDAB) as evidenced by X-ray diffraction analyses. We postulate for this compound the chemical formula NaB2C2N2H13. The thermolysis of NaEDAB below 400 °C releases about 8 wt.% pure hydrogen, without producing foaming. Moreover, sodium addition significantly modifies hydrogen desorption enthalpies, giving rise to milder exothermic H2 release at moderate temperatures with respect to neat EDAB, as well as an endothermic desorption process at higher temperature. This result opens novel and promising perspectives towards the reversible hydrogenation of these compounds. © 2014 Hydrogen Energy Publications, LLC.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84921839673&doi=10.1016%2fj.ijhydene.2014.12.053&partnerID=40&md5=e050a04b636e87a8ab87619679ab40c9
DOI10.1016/j.ijhydene.2014.12.053
Citation KeyLeardini20152763