A method for purifying solid borazane (NH.sub.3BH.sub.3 (s)) includes a) bringing solid borazane (NH.sub.3BH.sub.3 (s)) containing impurities into contact with a stream of gaseous ammonia (NH.sub.3 (g)) to obtain, by selective liquefaction of the borazane, a liquid phase containing liquefied borazane and ammonia and a solid phase constituted of at least a part of the impurities, b) separating the liquid and solid phases for recovery of the liquid phase, on the one hand, and of the solid phase, on the other hand; c) removing the ammonia from the recovered liquid phase, this removal causing precipitation of the purified borazane (NH.sub.3BH.sub.3 (s)); and d) recovering the purified precipitated borazane (NH.sub.3BH.sub.3 (s)).

A method for producing borazane, includes the synthesis of the borazane by reacting (metathesis reaction) at least one ammonium salt with at least one borohydride, the at least one borohydride being selected from the alkali metal borohydrides and the alkali-earth metal borohydrides. The (metathesis) reaction is carried out with gaseous ammonia flushing; gaseous ammonia being co-liquefied with the at least one borohydride and gradually with borazane as the borazane is synthesized.

Disclosed herein is the preparation of functional group containing amine-boranes from the corresponding amines. The mild reaction conditions allow for the direct preparation of several hitherto inaccessible amine-boranes containing a functional moiety, such as but not limited to, alkene, alkyne, hydroxyl, thiol, acetal, ester, amide, nitrile, nitro, and alkoxysilane.

A method and apparatus for preparing boron nitride nanotubes (BNNTs) according to an embodiment may ensure mass-production, may increase yield by reducing a production time, and may prepare BNNTs with high purity. The method includes steps of providing a first powder including boron, forming a second powder including a boron precursor by nano-sizing the first powder, forming a precursor disk by mixing the second powder with a binder; and growing BNNTs on the precursor disk.

The present disclosure relates to a composite having a porous graphene oxide material (A) and ammonia borane (B), wherein the porous graphene oxide material (A) has a density of 1-100 mg/cm.sup.3, and a method for producing the same. The disclosure also relates to a hydrogen-releasing device having the disclosed composite as well as to an energy-producing device having the disclosed composite. Moreover, the disclosure relates to an aircraft having the hydrogen-releasing device and/or the energy-producing device.

Disclosed herein is the preparation of functional group containing amine-boranes from the corresponding amines. The mild reaction conditions allow for the direct preparation of several hitherto inaccessible amine-boranes containing a functional moiety, such as but not limited to, alkene, alkyne, hydroxyl, thiol, acetal, ester, amide, nitrile, nitro, and alkoxysilane.

Ternary tungsten boride nitride (WBN) thin films and related methods of formation are provided. The films are have excellent thermal stability, tunable resistivity and good adhesion to oxides. Methods of forming the films can involve thermal atomic layer deposition (ALD) processes in which boron-containing, nitrogen-containing and tungsten-containing reactants are sequentially pulsed into a reaction chamber to deposit the WBN films. In some embodiments, the processes include multiple cycles of boron-containing, nitrogen-containing and tungsten-containing reactant pulses, with each cycle including multiple boron-containing pulses.

A reaction method comprising combining a carbonyl-substituted arylboronic acid or ester and an -effect amine in aqueous solution at a temperature between about 5 C to 55 C, and a pH between 2 and 8 to produce an adduct. A process is also provided comprising: contacting a boron compound having a boron atom bonded to a sp.sup.2 hybridized carbon conjugated with a cis-carbonyl, the boron having at least one labile substituent, with an -effect amine, in a solvent for a time sufficient to form an adduct, which may proceed to further products.

Surface-modified nanoparticles wherein each nanoparticle includes an inorganic core and surface modifying groups, wherein the surface modifying groups include at least one triorganoborane-amine complex having the structure ZNHR.sup.1B(R.sup.2).sub.3 wherein: Z is a divalent organic group; R.sup.1 is H or an organic group; and each R.sup.2 is independently an organic group bound to the boron atom through a carbon atom. The inorganic core is typically an inorganic oxide core, e.g., silica, zirconia, or alumina.

Disclosed herein is the preparation of functional group containing amine-boranes from the corresponding amines. The mild reaction conditions allow for the direct preparation of several hitherto inaccessible amine-boranes containing a functional moiety, such as but not limited to, alkene, alkyne, hydroxyl, thiol, acetal, ester, amide, nitrile, nitro, and alkoxysilane.