Systems and methods for producing microcrystalline alpha alane are provided herein. An exemplary process for producing microcrystalline alpha alane includes reacting lithium aluminum hydride and aluminum chloride in a solvent to produce alane etherate, filtering alane etherate from the reactant, combining the filtered alane etherate with a lithium borohydride solution to produce solids that include microcrystalline alane etherate, removing remaining solvent from the solids, creating a slurry from the solids and an aromatic solvent, and heating the slurry to convert the microcrystalline alane etherate to microcrystalline alpha alane.

Systems and methods for producing microcrystalline alpha alane are provided herein. An exemplary process for producing microcrystalline alpha alane includes reacting lithium aluminum hydride and aluminum chloride in a solvent to produce alane etherate, filtering alane etherate from the reactant, combining the filtered alane etherate with a lithium borohydride solution to produce solids that include microcrystalline alane etherate, removing remaining solvent from the solids, creating a slurry from the solids and an aromatic solvent, and heating the slurry to convert the microcrystalline alane etherate to microcrystalline alpha alane.

Embodiments of the present invention relate to a hydrogen generating fuel comprising grains comprising a promoter and AlH.sub.3, each grain having a size between 1 and 10 m. In some embodiments, the grains can be pressed into a porous pellet.

Embodiments of the present invention relate to a hydrogen generating fuel comprising grains comprising a promoter and AlH.sub.3, each grain having a size between 1 and 10 m. In some embodiments, the grains can be pressed into a porous pellet.

The present disclosure relates to an apparatus for preparing germane gas and a method for preparing monogermane gas using same. More particularly, the present disclosure relates to an apparatus for preparing germane gas, capable of stably producing a large amount of monogermane gas by mixing starting materials in short time and removing reaction heat at the same time using a reactor having a microstructured channel, and a method for preparing monogermane gas using same. In accordance with the present disclosure, it is easy to control rapid increase of reaction temperature and pressure during mass production of germane gas. Accordingly, monogermane gas can be produced in large scale with high yield.

The present disclosure relates to an apparatus for preparing germane gas and a method for preparing monogermane gas using same. More particularly, the present disclosure relates to an apparatus for preparing germane gas, capable of stably producing a large amount of monogermane gas by mixing starting materials in short time and removing reaction heat at the same time using a reactor having a microstructured channel, and a method for preparing monogermane gas using same. In accordance with the present disclosure, it is easy to control rapid increase of reaction temperature and pressure during mass production of germane gas. Accordingly, monogermane gas can be produced in large scale with high yield.

In some examples, a method of forming alane (AlH.sub.3), the method comprising reacting one of: 1) a MAlH.sub.4, wherein M is an alkali metal; 2) alkali-metal hydride, MH; or 3) alkali-metal with one or more aluminum halides (AlX.sub.3, where X is a halogen), via a mechanochemical process, to form the alane, wherein the reaction is substantially solvent free and carried out in an environment with a temperature between approximately 250 K and approximately 330 K.

In some examples, a method of forming alane (AlH.sub.3), the method comprising reacting one of: 1) a MAlH.sub.4, wherein M is an alkali metal; 2) alkali-metal hydride, MH; or 3) alkali-metal with one or more aluminum halides (AlX.sub.3, where X is a halogen), via a mechanochemical process, to form the alane, wherein the reaction is substantially solvent free and carried out in an environment with a temperature between approximately 250 K and approximately 330 K.

The invention relates to methods of forming an alane-etherate complex and -alane from the alane-etherate complex. The methods include reacting an alkyl halide with a metal alanate in a solvent including an ether. A tertiary amine may also be added to the reaction. The alane is collected after removal of the solvent and/or the tertiary amine. An electrospraying process can be used to remove the solvent.

The invention relates to methods of forming an alane-etherate complex and -alane from the alane-etherate complex. The methods include reacting an alkyl halide with a metal alanate in a solvent including an ether. A tertiary amine may also be added to the reaction. The alane is collected after removal of the solvent and/or the tertiary amine. An electrospraying process can be used to remove the solvent.