Results 51 to 60 of about 9,481 (204)

Complexation of Ammonia Boranes with Al³⁺

Inorganic 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, Kasper T. Møller, Koen Robeyns, Véronique Louppe, Torben R. Jensen, Yaroslav Filinchuk   +5 more
openaire   +3 more sources

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

, 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, Andriy H. Nevidomskyy, B. Peng, Dmitry Chernyshov, H. T. Stokes, J. E. Dennis, P. Toledano, R. G. Parr, V. I. Bakhmutov, Vladimir Dmitriev, Yaroslav Filinchuk, Yu. A. Izyumov   +11 more
core   +1 more source

Nanoconfined ammonia borane in a flexible metal-organic framework Fe-MIL-53: clean hydrogen release with fast kinetics [PDF]

, 2013
We demonstrated the dehydrogenation behaviour of nanoconfined ammonia borane (AB) in Fe–MIL-53, a flexible metal–organic framework (MOF) by solid state thermolysis.
Ford, J, Gadipelli, S, Guo, Z-X, Travis, W, Wu, H, Yildirim, T   +5 more
core   +1 more source

Transmission of Radio‐Frequency Waves and Nuclear Magnetic Resonance in Lanthanum Superhydrides

Advanced Science, EarlyView.
1H NMR and radio‐frequency transmission measurements of lanthanum superhydrides at 165 GPa reveals a transition at 260–280 K by a strong suppression of the signal intensity, significant changes in NMR spectra, including a dramatic decrease of the relaxation rate 1/T1T, and pronounced shielding effect, which may have a superconducting nature.
Dmitrii V. Semenok, Florian Bärtl, Di Zhou, Toni Helm, Sven Luther, Joachim Wosnitza, Ivan A. Troyan, Viktor V. Struzhkin, Hannes Kühne   +8 more
wiley   +1 more source

In situ Synchrotron X-ray Thermodiffraction of Boranes

Crystals, 2016
Boranes of low molecular weight are crystalline materials that have been much investigated over the past decade in the field of chemical hydrogen storage.
Pascal G. Yot, Philippe Miele, Umit B. Demirci   +2 more
doaj   +1 more source

B-Methylated Amine-Boranes:Substituent Redistribution, Catalytic Dehydrogenation, and Facile Metal-Free Hydrogen Transfer Reactions [PDF]

, 2015
Although the dehydrogenation chemistry of amine-boranes substituted at nitrogen has attracted considerable attention, much less is known about the reactivity of their B-substituted analogues. When the B-methylated amine-borane adducts, RR′NH·BH2Me (1a: R
Haddow, Mairi F., Jurca, Titel, Leitao, Erin M., Manners, Ian, Robertson, Alasdair P M, Schäfer, André, Sparkes, Hazel A., Stubbs, Naomi E., Woodall, Christopher H.   +8 more
core   +4 more sources

Ammonia borane at high pressures

Chinese 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, Vadym Drozd, Yongzhou Sun, Shah Najiba   +3 more
openaire   +1 more source

Porous Materials for Hydrolytic Dehydrogenation of Ammonia Borane [PDF]

Materials, 2015
Hydrogen storage is still one of the most significant issues hindering the development of a “hydrogen energy economy”. Ammonia borane is notable for its high hydrogen densities. For the material, one of the main challenges is to release efficiently the maximum amount of the stored hydrogen.
Umegaki, Tetsuo, Xu, Qiang, Kojima, Yoshiyuki   +2 more
openaire   +2 more sources

Synthesis and Isolation of Bismuth Scorpionate Complexes: Toward Bond Activation via Bismuth‐Ligand Cooperation

Chemistry – A European Journal, EarlyView.
ABSTRACT Over the past twenty years, main group chemistry has significantly expanded its scope to include reactivities once considered the exclusive domain of transition metals. Among the emerging concepts, element‐ligand cooperation has proven to be a powerful strategy for enabling bond activation reactions but remains relatively unexplored for ...
Lennart Hensle, Viktoria H. Gessner
wiley   +1 more source

Recent advances in the development of ammonia borane for both energetic and energy storage materials

Propulsion and Power Research
Ammonia borane (NH3BH3) has garnered significant attention as a high-potential hydrogen storage material owing to its exceptional hydrogen content of 19.6 wt%.
Rui Pu, Yunlong Zhang, Shaoli Chen, Qilong Yan   +3 more
doaj   +1 more source