@misc{pottmaier_dehydrogenation_reactions_2011, author={Pottmaier, D., Pistidda, C., Groppo, E., Bordiga, S., Spoto, G., Dornheim, M., Baricco, M.}, title={Dehydrogenation reactions of 2NaBH4 + MgH2 system}, year={2011}, howpublished = {journal article}, doi = {https://doi.org/10.1016/j.ijhydene.2011.01.059}, abstract = {Reactive Hydride Composites (RHCs), ball-milled composites of two or more different hydrides, are suggested as an alternative for solid state hydrogen storage. In this work, dehydrogenation of 2NaBH4 + MgH2 system under vacuum was investigated using complementary characterization techniques. At first, thermal programmed desorption of as-milled composite and single compounds was used to identify the temperature range of hydrogen release. RHC samples annealed at various temperatures up to 500 °C were characterized by X-ray diffraction, infrared spectroscopy and scanning electron microscopy. It was found that the dehydrogenation reaction under vacuum is likely to proceed as follows: 2NaBH4 + MgH2 (>250 °C) → 2NaBH4 + 1/2MgH2 + 1/2Mg + 1/2H2 (>350 °C) ↔ 3/2NaBH4 + 1/4MgB2 + 1/2NaH + 3/4Mg + 7/4H2 (>450 °C) → 2Na + B + 1/2Mg + 1/2MgB2 + 5H2. In addition, presence of NaMgH3 phase suggests the occurrence of secondary reactions.}, note = {Online available at: \url{https://doi.org/10.1016/j.ijhydene.2011.01.059} (DOI). Pottmaier, D.; Pistidda, C.; Groppo, E.; Bordiga, S.; Spoto, G.; Dornheim, M.; Baricco, M.: Dehydrogenation reactions of 2NaBH4 + MgH2 system. International Journal of Hydrogen Energy. 2011. vol. 36, no. 13, 7891-7896. DOI: 10.1016/j.ijhydene.2011.01.059}}