Effect of the partial replacement of CaH2 with CaF2 in the Mixed System CaH2 + MgB2

Pistidda, C.; Karimi, F.; Garroni, S.; Rzeszutek, A.; Bonatto Minella, C.; Milanese, Chiara; T. T., Le; Rude, L. H.; Skibsted, J.; Jensen, T. R.; Horstmann, C.; Gundlach, C.; Tolkiehn, M.; Pranzas, P. K.; Schreyer, A.; Klassen, T.; Dornheim, M.

doi:10.1021/jp508780b

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In this work the effect of a partial replacement of CaH2 with CaF2 on the sorption properties of the system CaH2 + MgB2 has been studied. The first five hydrogen absorption and four desorption reactions of the CaH2 + MgB2 and 3CaH2 + CaF2 + 4MgB2 systems were investigated by means of volumetric measurements, high-pressure differential scanning calorimetric technique (HP-DSC), 11B and 19F MAS NMR spectroscopy, and in situ synchrotron radiation powder X-ray diffraction (SR-PXD). It was observed that already during the mixing of the reactants formation of a nonstoichiometric CaF2-xHx solid solution takes place. Formation of the CaF2-xHx solid solution sensibly affects the overall hydrogen sorption reactions of the system CaH2 + MgB2.

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Titolo:	Effect of the partial replacement of CaH2 with CaF2 in the Mixed System CaH2 + MgB2
Autori:	Pistidda C. [Writing – Original Draft Preparation] (Corresponding) Karimi F. [Investigation] Garroni S. [Investigation] Rzeszutek A. [Writing – Original Draft Preparation] Bonatto Minella C. [Investigation] MILANESE, CHIARA [Investigation] Le T. T. [Investigation] Rude L. H. [Investigation] Skibsted J. [Investigation] Jensen T. R. [Investigation] Horstmann C. [Conceptualization] Gundlach C. [Methodology] Tolkiehn M. [Investigation] Pranzas P. K. [Investigation] Schreyer A. [Data Curation] Klassen T. [Writing – Review & Editing] Dornheim M. [Writing – Review & Editing] mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2014
Rivista:	JOURNAL OF PHYSICAL CHEMISTRY. C
Abstract:	In this work the effect of a partial replacement of CaH2 with CaF2 on the sorption properties of the system CaH2 + MgB2 has been studied. The first five hydrogen absorption and four desorption reactions of the CaH2 + MgB2 and 3CaH2 + CaF2 + 4MgB2 systems were investigated by means of volumetric measurements, high-pressure differential scanning calorimetric technique (HP-DSC), 11B and 19F MAS NMR spectroscopy, and in situ synchrotron radiation powder X-ray diffraction (SR-PXD). It was observed that already during the mixing of the reactants formation of a nonstoichiometric CaF2-xHx solid solution takes place. Formation of the CaF2-xHx solid solution sensibly affects the overall hydrogen sorption reactions of the system CaH2 + MgB2.
Handle:	http://hdl.handle.net/11571/992797
Appare nelle tipologie:	1.1 Articolo in rivista

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