Structural Features and Phase Transitions during Dehydrogenation of a Composite Based on Magnesium Hydride and Metal-Organic Framework Structures MIL-101 (Cr); Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques; Vol. 17, iss. 5

Structural Features and Phase Transitions during Dehydrogenation of a Composite Based on Magnesium Hydride and Metal-Organic Framework Structures MIL-101 (Cr); Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques; Vol. 17, iss. 5

Bibliographische Detailangaben
Parent link:Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques.— .— New York: Springer Science+Business Media LLC
Vol. 17, iss. 5.— 2023.— P. 1156–1161
Weitere Verfasser: Kudiyarov V. N. Victor Nikolaevich, Kurdyumov N. Nikita, Elman R. R. Roman Romanovich, Pushilina N. S. Natalia Sergeevna
Zusammenfassung:Title screen
It is shown that a composite based on magnesium hydride and metal-organic framework, formed during mechanical synthesis in a high-energy ball mill, has a core–shell structure in which magnesium hydride particles are coated with nanoscale particles of the MIL-101 metal-organic framework. The distribution of particles of the metal-organic framework creates trapping centers and channels for hydrogen diffusion, resulting in a decrease in the temperature of hydrogen desorption from magnesium hydride by 270°C compared to pure MgH2. In turn, lowering the temperature leads to a decrease in the desorption activation energy, which can favorably influence the use of such a composite as a hydrogen storage material. An in situ analysis of the phase transitions during dehydrogenation has shown that the phase transitions in the composite occur in three main stages. The first stage is characterized by defect annealing and structure relaxation without hydrogen desorption, the second stage involves hydrogen desorption without hydride dissociation, and the third stage involves hydride dissociation followed by residual hydrogen desorption
Текстовый файл
AM_Agreement
Sprache:Englisch
Veröffentlicht: 2023
Schlagworte:
composite
magnesium
hydride
metal-organic framework structures
hydrogen
in situ
desorption
temperature
synthesis
synchrotron radiation
phase transitions
электронный ресурс
труды учёных ТПУ
Online-Zugang:https://doi.org/10.1134/S1027451023050233
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678766

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