Results 51 to 60 of about 11,878 (246)

Time dependent decomposition of ammonia borane for the controlled production of 2D hexagonal boron nitride. [PDF]

open access: yes, 2017
Ammonia borane (AB) is among the most promising precursors for the large-scale synthesis of hexagonal boron nitride (h-BN) by chemical vapour deposition (CVD). Its non-toxic and non-flammable properties make AB particularly attractive for industry.
Babenko, Vitaliy   +8 more
core   +2 more sources

Efficient catalytic performance of Ru nanoparticles for hydrogen generation from NH3BH3: The dual role of Mo oxide

open access: yesCatalysis Communications, 2023
Ru nanoparticles doped and supported by Mo oxide (Ru/Mo oxide NPs) were synthesized via an in situ co-precipitation strategy for hydrogen production via hydrolysis of ammonia borane (AB).
Xigang Du   +6 more
doaj   +1 more source

Positional disorder in ammonia borane at ambient conditions [PDF]

open access: yes, 2014
We solve a long-standing experimental discrepancy of NH$_3$BH$_3$, which---as a molecule---has a threefold rotational axis, but in its crystallized form at room temperature shows a fourfold symmetry about the same axis, creating a geometric ...
Giannozzi, P.   +2 more
core   +2 more sources

The onset of dehydrogenation in solid Ammonia Borane, an ab-initio metadynamics study

open access: yes, 2019
The discovery of effective hydrogen storage materials is fundamental for the progress of a clean energy economy. Ammonia borane ($\mathrm{H_3BNH_3}$) has attracted great interest as a promising candidate but the reaction path that leads from its solid ...
Parrinello, Michele   +4 more
core   +1 more source

Hydrogen Evolution upon Ammonia Borane Solvolysis: Comparison between the Hydrolysis and Methanolysis Reactions

open access: yesChemistry, 2023
Hydrogen (H2) production is a key challenge for green carbon-free sustainable energy. Among the H2 evolution methods from H-rich materials, ammonia borane (AB) solvolysis stands as a privileged source under ambient and sub-ambient conditions given its ...
Naixin Kang   +2 more
doaj   +1 more source

High-pressure phase and transition phenomena in ammonia borane NH3BH3 from X-ray diffraction, Landau theory, and ab initio calculations

open access: yes, 2009
Structural evolution of a prospective hydrogen storage material, ammonia borane NH3BH3, has been studied at high pressures up to 12 GPa and at low temperatures by synchrotron powder diffraction.
A. Spek   +11 more
core   +1 more source

Three-Leaf Dart-Shaped Single-Crystal BN Formation Promoted by Surface Oxygen [PDF]

open access: yes, 2018
Two-dimensional hexagonal boron nitride (h-BN) single crystals with various shapes have been synthesized by chemical vapor deposition over the past several years.
Chen, Haiyuan   +8 more
core   +2 more sources

Complexation of Ammonia Boranes with Al3+

open access: yesInorganic Chemistry, 2019
Ammonia borane, NH3BH3 (AB), is very attractive for hydrogen storage; however, it dehydrogenates exothermally, producing a mixture of polymeric products with limited potential for direct rehydrogenation. Recently, it was shown that AB complexed with Al3+ in Al(BH4)3·AB endothermically dehydrogenates to a single product identified as Al(BH4)3·NHBH, with
Iurii Dovgaliuk   +5 more
openaire   +3 more sources

Improvement of the kinetics of hydrogen release from ammonia borane confined in silica aerogel [PDF]

open access: yes, 2017
Ammonia borane is a promising hydrogen storage material due to its high gravimetric capacity (19.6 % wt), but it also presents limitations such as a slow hydrogen release with a long induction time, a difficult regeneration, or the formation of foams and
Martín Martínez, Ángel   +3 more
core   +1 more source

Ammonia borane at high pressures

open access: yesChinese Science Bulletin, 2014
Ammonia borane has received tremendous research attention in the past decade because of its potential for chemical hydrogen storage. This paper reviews recent studies about the behavior of ammonia borane at high pressures. While much work is still needed to comprehensively understand the pressure influence on this molecular crystal, a phase diagram ...
Jiuhua Chen   +3 more
openaire   +1 more source

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