Results 171 to 180 of about 3,729 (203)

Borates in hydrolysis of ammonia borane

International Journal of Hydrogen Energy, 2013
Abstract Ammonia borane NH3BH3 (19.5 wt% H) is able to release hydrogen by hydrolysis in the presence of a catalyst in ambient conditions. This reaction has received considerable attention since 2006, with special focus on the catalytic material. In comparison, important aspects like the nature of the hydrolysis by-product(s) have been much less ...
G. Moussa, R. Moury, U.B. Demirci, P. Miele   +3 more
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Ammonia Borane Based-Propellants

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2008
The combustion of ammonia borane (AB) is studied as a potential fuel or propellant ingredient for propulsion applications. Theoretical equilibrium analyses indicate that due to the high hydrogen content of AB and moderate exothermicity of decomposition, it has the potential to boost Isp, thereby increase performance.
Jongguen Lee, M. Weismiller, T. Connell, Grant Risha, Richard Yetter, Peter Gilbert, Steven Son   +6 more
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The thermal decomposition of ammonia borane

Thermochimica Acta, 1978
Abstract The thermal decomposition of ammonia-borane has been studied by thermogravimetry, differential thermal analysis, and decomposition product measurements. Vigorous decomposition with hydrogen evolution begins near 120°C and proceeds in stages as the temperature is increased to 200°C leaving a white residue.
M.G. Hu, R.A. Geanangel, W.W. Wendlandt
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Noncatalytic hydrothermolysis of ammonia borane

International Journal of Hydrogen Energy, 2008
Abstract Hydrolysis of ammonia borane (AB) is attractive as a chemical method for hydrogen storage. The use of catalysts is, however, usually required. In the present paper, two new methods for releasing hydrogen from AB and water are investigated which do not involve any catalyst.
Moiz Diwan, Victor Diakov, Evgeny Shafirovich, Arvind Varma   +3 more
openaire   +1 more source

Ammonia borane as a reducing agent in organic synthesis

Organic & Biomolecular Chemistry, 2020
Ammonia borane is gaining increasing attention as a sustainable and atom-economical winning reagent for the reduction of several substrates.
Chiara Faverio, Monica Fiorenza Boselli, Fabrizio Medici, Maurizio Benaglia   +3 more
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Pyrolytic Decomposition of Ammonia Borane to Boron Nitride

Inorganic Chemistry, 2010
The thermal decomposition of ammonia borane was studied using a variety of methods to qualitatively identify gas and remnant solid phase species after thermal treatments up to 1500 °C. At about 110 °C, ammonia borane begins to decompose yielding H(2) as the major gas phase product.
Samuel, Frueh, Richard, Kellett, Carl, Mallery, Trent, Molter, William S, Willis, Cecil, King'ondu, Steven L, Suib   +6 more
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Ammonia–borane: the hydrogen source par excellence?

Dalton Trans., 2007
Ammonia-borane, H3NBH3, is an intriguing molecule for chemical hydrogen storage applications. With both protic N-H and hydridic B-H bonds, three H atoms per main group element, and a low molecular weight, H3NBH3 has the potential to meet the stringent gravimetric and volumetric hydrogen storage capacity targets needed for transportation applications ...
Frances H, Stephens, Vincent, Pons, R, Tom Baker   +2 more
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Interaction of lithium hydride and ammonia borane in THF

Chemical Communications, 2008
The two-step reaction between LiH and NH(3)BH(3) in THF leads to the production of more than 14 wt% of hydrogen at 40 degrees C.
Xiong, Z., Chua, Y.S., Wu, G., Xu, W., Chen, P., Shaw, W., Karkamkar, A., Linehan, J., Smurthwaite, T., Autrey, T.   +9 more
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Ammonia Borane Hydrogen Release in Ionic Liquids

Inorganic Chemistry, 2009
The rate and extent of H(2)-release from ammonia borane (AB), a promising, high-capacity hydrogen storage material, was found to be enhanced in ionic-liquid solutions. For example, AB reactions in 1-butyl-3-methylimidazolium chloride (bmimCl) (50:50-wt %) exhibited no induction period and released 1.0 H(2)-equiv in 67 min and 2.2 H(2)-equiv in 330 min ...
Daniel W, Himmelberger, Laif R, Alden, Martin E, Bluhm, Larry G, Sneddon   +3 more
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(H3N–BH3)4: the ammonia borane tetramer

Physical Chemistry Chemical Physics, 2012
For this special edition of PCCP dealing with prediction of new molecules using quantum mechanical methods, we propose a structure for (H(3)N-BH(3))(4), the isolated ammonia borane tetramer in gas phase, for which there are no experimental reports. The structure, belonging to the S(4) point group, was found at the MP2/6-311++G(d,p) level of theory; the
Guerra, Doris, David, Jorge, Restrepo, Albeiro   +2 more
openaire   +3 more sources