Non-isothermal kinetics and in situ SR XRD studies of hydrogen desorption from dihydrides of binary Ti–V alloys

S. Suwarno, J.K. Solberg, J.P. Mæhlen, R.V. Denys, B. Krogh, E. Ochoa-Fernández, B.T. B rresen, E. Rytter, I.E. Gabis, V.A. Yartys

Результат исследований: Научные публикации в периодических изданияхстатья

13 Цитирования (Scopus)

Аннотация

Phase transformations during dynamic dehydrogenation of Ti(1−x)VxH2 (x = 0.1; 0.2; 0.3) were studied using in situ Synchrotron X-Ray Diffraction (SR XRD) and non-isothermal kinetics experiments. The main dehydrogenation path for γ-Ti(1−x)VxH2 was found to be γ → δ → β → βalloy. Body-centred tetragonal δ-hydride was found to be an intermediate phase of the γ → β transformation in Ti0.8–0.9V0.1–0.2H2. TDS, in situ SR XRD and isoconversional kinetics studies showed that hydrogen desorption from Ti1−xVxH2 is composed of simultaneous reactions taking place between 300 and 600 °C. The effective activation energy of hydrogen desorption depends on the vanadium contents and the reaction pathway, increasing from 21 kJ/mol H2 (γ → δ) to 60–110 kJ/mol H2 (δ → β).
Язык оригиналаанглийский
Страницы (с-по)14704–14714
ЖурналInternational Journal of Hydrogen Energy
Том38
Номер выпуска34
DOI
СостояниеОпубликовано - 2013

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    Suwarno, S., Solberg, J. K., Mæhlen, J. P., Denys, R. V., Krogh, B., Ochoa-Fernández, E., B rresen, B. T., Rytter, E., Gabis, I. E., & Yartys, V. A. (2013). Non-isothermal kinetics and in situ SR XRD studies of hydrogen desorption from dihydrides of binary Ti–V alloys. International Journal of Hydrogen Energy, 38(34), 14704–14714. https://doi.org/10.1016/j.ijhydene.2013.08.103