Results 231 to 240 of about 16,200 (273)

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.
Claudio Pistidda, Sebastiano Garroni, M D Baro   +2 more
exaly   +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   +2 more
exaly   +4 more sources

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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, Noratiqah Sazelee, M Ismail
exaly   +3 more sources

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 ...
A M Neves, Julian Puszkiel, Giovanni Capurso   +2 more
exaly   +3 more sources

Synchrotron Diffraction Studies of Hydrogen Absorption/Desorption on CaH₂ + MgB₂ Reactive Hydride Composite Mixed With Fluorinated Compounds

The Journal of Physical Chemistry C, 2015
The reactive hydride composites 9CaH2 + CaF2 + 10MgB2, 10Ca(BH4)2 + 9MgH2 + MgF2, and 9Ca(BH4)2 + Ca(BF4)2 + 10MgH2 were prepared by ball milling.
Karina Suárez-Alcántara, Magnus H. Sørby, Claudio Pistidda, Fahim Karimi, Ivan Saldan, Bjørn C. Hauback, Thomas Klassen, Martin Dornheim   +7 more
semanticscholar   +3 more sources

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
semanticscholar   +3 more sources

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 ...
Juan Luis Carrillo-Bucio, Ivan Saldan, Claudio Pistidda, Fahim Karimi, Karina Suárez-Alcántara, Martin Dornheim, Thomas Klassen   +6 more
semanticscholar   +3 more sources

Silicone copolymers bearing reactive vinyl and hydride functionalities: Synthesis, characterisation and particulate composite thereof for specialty applications

Materials Chemistry and Physics, 2017
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
semanticscholar   +3 more sources

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   +3 more sources