| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Vitillo, Jenny Grazia
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2018Understanding and Controlling the Dielectric Response of Metal–Organic Frameworkscitations
- 2018Time-resolved operando studies of carbon supported Pd nanoparticles under hydrogenation reactions by X-ray diffraction and absorptioncitations
- 2018On the structure of superbasic (MgO)n sites solvated in a faujasite zeolitecitations
- 2018Structure and Host–Guest Interactions of Perylene–Diimide Dyes in Zeolite L Nanochannelscitations
- 2017Core-Shell Structure of Palladium Hydride Nanoparticles Revealed by Combined X-ray Absorption Spectroscopy and X-ray Diffractioncitations
- 2014Evolution and reversibility of host/guest interactions with temperature changes in a methyl red@palygorskite polyfunctional hybrid nanocompositecitations
- 2012Evolution of host/guest interactions with heating in a palygorskite/methyl red (Maya Red) hybrid composite
- 2012Monolithic nanoporous-crystalline aerogels based on PPOcitations
- 2011Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffractioncitations
- 2011Nanoporous crystalline phases of poly(2,6-dimethyl-1,4-phenylene)oxidecitations
- 2011Combined study of structural properties of metal-organic frameworks changing organic linkers and metal centers
- 2011Aerogels and polymorphism of isotactic poly(4-methyl-pentene-1)citations
- 2011Structure and thermodynamic properties of the NaMgH3 perovskitecitations
- 2011Structure-activity relationships of simple molecules adsorbed on MOF materials: in situ experiments vs. theory
- 2010Hydrogen adsorption by δ and ε crystalline phases of syndiotactic polystyrene aerogelscitations
- 2010Storage of hydrogen as a guest of a nanoporous polymeric crystalline phasecitations
- 2010Hydrogen adsorption by delta and epsilon crystalline phases of syndiotactic polystirene aerogelscitations
- 2009CO adsorption on CPO-27-Ni coordination polymer: spectroscopic features and interaction energycitations
- 2009CO adsorption on cpo-27-ni coordination polymercitations
- 2008Oriented TiO2 nanostructured pillar arrayscitations
- 2008Local structure of CPO-27-Ni metallorganic framework upon dehydration and coordination of NOcitations
Places of action
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article
Structure and thermodynamic properties of the NaMgH3 perovskite
Abstract
<p>One of the bottlenecks in the implementation of a hydrogen economy is the development of storage materials that can uptake high content of H<sub>2</sub> and release it within a suitable temperature and pressure range. Among the proposed hydride systems, the perovskite NaMgH<sub>3</sub> is receiving increasing attention, not only as the Mg ternary based hydride with the highest hydrogen gravimetric (6 wt %) and volumetric density (88 g L<sup>-1</sup>) but also as a stable hydride likely to be formed in the transformation reactions of mixed hydrides. However, there is a large scatter in the literature for both the structure of the NaMgH<sub>3</sub> compound and the thermodynamics of the hydrogenation/dehydrogenation processes. In this paper a critical review of the literature data, supported by a new set of experimental (in situ synchrotron X-ray diffraction, infrared spectroscopy, high-pressure differential scanning calorimetry, pressure composition isotherms) and theoretical data is presented. The influence of ball milling on the microstructure is studied in the NaMgH <sub>3</sub> in comparison to NaH and MgH<sub>2</sub>. The infrared spectrum of NaMgH<sub>3</sub> compound, assigned by calculated and experimental results, is characterized by vibrational regions around 1100 and 600 cm<sup>-1</sup>. In situ synchrotron X-ray diffraction measurements show the desorption reaction of NaMgH<sub>3</sub> into NaH and Mg at about 673 K under 0.2 MPa H<sub>2</sub>, and the successive reabsorption of NaH and Mg back to NaMgH<sub>3</sub> at 623 K under 0.5 MPa H<sub>2</sub>. From high-pressure differential calorimetry, it was measured a formation enthalpy of 141 kJ/mol f.u for NaMgH<sub>3</sub> compound. It was confirmed the possible reaction of NaH with Mg with observation of NaMgH<sub>3</sub> formation in 1.0 MPa H<sub>2</sub>. Finally, this work provides a thermodynamic description of the NaMgH<sub>3</sub> phase by a critical assessment of the available information using the CALPHAD approach and the equilibrium pressure-temperature phase diagram is presented.</p>