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Effect of NaH/MgB2 ratio on the hydrogen absorption kinetics of the system NaH + MgB2 |
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| Authors: | Claudio Pistidda Daphiny Pottmaier Fahim Karimi Sebastiano Garroni Agnieszka Rzeszutek Martin Tolkiehn Maximilian Fichtner Wiebke Lohstroh Marcello Baricco Thomas Klassen Martin Dornheim |
| Affiliation: | 1. Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, D-21502 Geesthacht, Germany;2. Department of Chemistry and NIS, University of Turin and INSTM, Via P. Giuria 9, I-10125 Torino, Italy;3. Dipartimento di Chimica e Farmacia, Università di Sassari and INSTM, Via Vienna 2, I-07100 Sassari, Italy;4. DESY Synchrotron, at the Beam Line D3, Hamburg, Germany;5. Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021 Karlsruhe, Germany;6. Heinz Maier-Leibnitz Zentrum, Technische Universität München, Lichtenbergstraße 1, 85747 Garching, Germany |
| Abstract: | In this work the effect of the ratio of starting reactants on the hydrogen absorption reaction of the system xNaH + MgB2 is investigated. At a constant hydrogen pressure of 50 bar, depending on the amount of NaH present in the system NaH + MgB2, different hydrogen absorption behaviors are observed. For two system compositions: NaH + MgB2 and 0.5NaH + MgB2, the formation of NaBH4 and MgH2 as only crystalline hydrogenation products is achieved. The relation between the ratio of the starting reactants and the obtained hydrogenation products is discussed in detail. |
| Keywords: | Hydrogen storage Boron hydride Kinetics |
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