Synthesis of microcrystalline alpha alane
First Claim
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1. A method, comprising:
- reacting lithium aluminum hydride and aluminum trichloride in an ether solvent to produce an alane etherate solution comprising alane etherate, lithium aluminum hydride, and lithium chloride precipitate;
filtering the lithium chloride precipitate from the alane etherate solution;
removing a portion of the ether solvent from the alane etherate solution to create a slurry, the slurry comprising alane etherate, lithium aluminum hydride, and ether;
adding approximately 110 milliliters of aromatic solvent per 20 grams of microcrystalline alpha alane expected; and
heating the slurry to convert the alane etherate to obtain microcrystalline alpha alane.
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Abstract
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.
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Citations
15 Claims
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1. A method, comprising:
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reacting lithium aluminum hydride and aluminum trichloride in an ether solvent to produce an alane etherate solution comprising alane etherate, lithium aluminum hydride, and lithium chloride precipitate; filtering the lithium chloride precipitate from the alane etherate solution; removing a portion of the ether solvent from the alane etherate solution to create a slurry, the slurry comprising alane etherate, lithium aluminum hydride, and ether; adding approximately 110 milliliters of aromatic solvent per 20 grams of microcrystalline alpha alane expected; and heating the slurry to convert the alane etherate to obtain microcrystalline alpha alane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification