Results 221 to 230 of about 9,583 (259)

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

Journal of Alloys and Compounds, 2007
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Gagik Barkhordarian, Thomas Klassen, Martin Dornheim, Ruediger Bormann   +3 more
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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
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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
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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
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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
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Hydrogen Storage Properties of Nanoconfined LiBH₄–Mg₂NiH₄ Reactive Hydride Composites

The Journal of Physical Chemistry C, 2015
LiBH4–Mg2NiH4 reactive hydride composites have been nanoconfined into two types of mesoporous carbons: a templated carbon with ordered small pores of ∼4 nm and a carbon aerogel with pores size of ∼30 nm. In situ synchrotron X-ray diffraction has revealed the formation of the MgNi2.5B2 compound during dehydrogenation at 300 °C and 5 bar of H2 pressure ...
Javadian, Payam, Zlotea, Claudia, Ghimbeu, Camélia Matei, Latroche, Michel, Jensen, Torben   +4 more
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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, Martin Dornheim, Bjørn C. Hauback   +4 more
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Effect of Hydrogen Back Pressure on Dehydrogenation Behavior of LiBH₄-Based Reactive Hydride Composites

The Journal of Physical Chemistry Letters, 2009
Hydrogen back pressure remarkably promotes the formation of metal boride during the dehydrogenation of 4LiBH4 + YH3, 6LiBH4 + CeH2 and 6LiBH4 + CaH2 composites, which seems to be a general phenomenon in LiBH4-based reactive hydride composites that enables mutual destabilization between LiBH4 and metal hydride.
Jae-Hyeok Shim, Jae-Hag Lim, Sami-ullah Rather, Young-Su Lee, Daniel Reed, Yoonyoung Kim, David Book, Young Whan Cho   +7 more
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Silicone copolymers bearing reactive vinyl and hydride functionalities: Synthesis, characterisation and particulate composite thereof for specialty applications

Materials Chemistry and Physics, 2018
Abstract High molecular weight vinyl terminated poly (dimethyl-co-diphenyl)siloxane polymer (V-PDMPS) was synthesised by a multistage process including hydrolysis of precursor chlorosilanes and their anionic polymerization followed by chain termination.
K. Indulekha, Rinu Elizabeth Roy, A.G. Vishnu, R.S. Rajeev, K.N. Ninan, C. Gouri   +5 more
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Notable hydriding properties of a nanostructured composite material of the Mg2Ni-H system synthesized by reactive mechanical grinding

Acta Materialia, 1997
The intermetallic compound Mg2Ni was mechanically ground under a hydrogen atmosphere to synthesize a nanostructured composite material that is composed of nanocrystalline intra-grain and disordered inter-grain regions. Both the thermal and magnetic analyses confirmed that a volume fraction of the latter region increases twenty times as much as that in ...
S. Orimo, H. Fujii, K. Ikeda
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