Results 221 to 230 of about 9,678 (253)

Milling time effect of Reactive Hydride Composites of NaF NaH MgB2 investigated by in situ powder diffraction

International Journal of Hydrogen Energy, 2016
Abstract Light metal complex borohydrides have high hydrogen storage capacities but suffer from drawbacks of slow hydrogen sorption kinetics, poor reversibility and high thermodynamic stability. The NaF + 9NaH + 5MgB2 composite has a theoretical hydrogen capacity of 7.7 wt% H assuming the formation of 10NaBH3.9F0.1 + 5MgH2.
Michael Heere, Magnus H Sørby, Claudio Pistidda   +2 more
exaly   +2 more sources

Effect of additives on hydrogen release reactivity of magnesium hydride composites

International Journal of Hydrogen Energy, 2022
Yaniv Gelbstein
exaly   +2 more sources

An overview of reactive hydride composite (RHC) for solid-state hydrogen storage materials

International Journal of Hydrogen Energy, 2021
Abstract Hydrogen storage using the metal hydrides and complex hydrides is the most convenient method because it is safe, enables high hydrogen capacity and requires optimum operating condition. Metal hydrides and complex hydrides offer high gravimetric capacity that allows storage of large amounts of hydrogen. However, the high operating temperature
N.A. Ali, N.A. Sazelee, M. Ismail
openaire   +1 more source

Activation of the reactive hydride composite 2NaBH4+MgH2

Scripta Materialia, 2011
A novel method to enhance the reaction kinetics of the reactive hydride composite 2NaBH4 + MgH2 is described. It has been discovered that short-term exposure to a moist atmosphere has a very beneficial effect on the desorption reaction of the 2NaBH4 + MgH2 mixture.
C. Pistidda, G. Barkhordarian, A. Rzeszutek, S. Garroni, C. Bonatto Minella, M.D. Baró, P. Nolis, Rüdiger Bormann, T. Klassen, M. Dornheim   +9 more
openaire   +1 more source

Functions of MgH2 in hydrogen storage reactions of the 6LiBH4–CaH2 reactive hydride composite

Dalton Transactions, 2012
A significant improvement of hydrogen storage properties was achieved by introducing MgH(2) into the 6LiBH(4)-CaH(2) system. It was found that ~8.0 wt% of hydrogen could be reversibly stored in a 6LiBH(4)-CaH(2)-3MgH(2) composite below 400 °C and 100 bar of hydrogen pressure with a stepwise reaction, which is superior to the pristine 6LiBH(4)-CaH(2 ...
Yifan, Zhou, Yongfeng, Liu, Yu, Zhang, Mingxia, Gao, Hongge, Pan   +4 more
openaire   +2 more sources

In-Situ Deposition of Alkali and Alkaline Earth Hydride Thin Films To Investigate the Formation of Reactive Hydride Composites

The Journal of Physical Chemistry C, 2010
We investigate the critical steps in the formation of Ca ...
Gonzalez-Silveira, M., Gremaud, R., Schreuders, H., Setten, M. M. van, Batyrev, E., Rougier, A., Dupont, L., Bardaji, E. G., Lohstroh, W., Dam, B.   +9 more
openaire   +4 more sources

Structural analysis of calcium reactive hydride composite for solid state hydrogen storage

Journal of Applied Crystallography, 2014
Owing to a theoretical hydrogen storage capacity of 10.5 wt% H2, Ca(BH4)2+MgH2, the so-called calcium reactive hydride composite (Ca-RHC), has a great potential as a hydrogen storage material. However, its dehydrogenation temperature (∼623 K) is too high for any mobile applications.
Fahim Karimi, P. Klaus Pranzas, Armin Hoell, Ulla Vainio, Edmund Welter, Vikram S. Raghuwanshi, Claudio Pistidda, Martin Dornheim, Thomas Klassen, Andreas Schreyer   +9 more
openaire   +1 more source

Unexpected kinetic effect of MgB2 in reactive hydride composites containing complex borohydrides

Journal of Alloys and Compounds, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Gagik Barkhordarian, Thomas Klassen, Martin Dornheim, Ruediger Bormann   +3 more
openaire   +1 more source

Hydrogenation Study of NaF/NaH/MgB₂ Reactive Hydride Composites

The Journal of Physical Chemistry C, 2017
The hydrogenation of NaF/9NaH + 5MgB2 and NaF/2NaH + 1.5MgB2 reactive hydride composites (RHC) was studied by volumetric titration (kinetics and PCI curves), in situ synchrotron radiation powder X-ray diffraction (SR-PXD), high-pressure differential scanning calorimetry (HP-DSC), Fourier transform infrared spectroscopy (FT-IR), and scanning electron ...
J. L. Carrillo-Bucio, I. Saldan, C. Pistidda, F. Karimi, K. Suárez-Alcántara, M. Dornheim, T. Klassen   +6 more
openaire   +1 more source

Development of a new approach for the kinetic modeling of the lithium reactive hydride composite (Li-RHC) for hydrogen storage under desorption conditions

Chemical Engineering Journal, 2023
Among some promising candidates for high-capacity energy and hydrogen storage is the Lithium-Boron Reactive Hydride Composite System (Li-RHC: 2 LiH + MgB2/2 LiBH4 + MgH2). This system desorbs hydrogen only at relatively high temperatures and presents a two-step series of reactions occurring in different time scales: first, MgH2 desorbs, followed by ...
Neves, A. M., Puszkiel, J., Capurso, G., Bellosta von Colbe, J. M., Klassen, T., Jepsen, J.   +5 more
openaire   +1 more source