Crystallization and Stabilization in the Synthesis of Microcrystalline Alpha Alane
First Claim
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1. A method for stabilizing aluminum hydride, comprising:
- producing aluminum hydride;
placing the aluminum hydride in a nonaqueous solvent;
adding a weak acid solution to the nonaqueous solvent and allow the aluminum hydride to contact the weak acid solution for a period of time to form passivated aluminum hydride;
separating the passivated aluminum hydride from the solvent and weak acid solution; and
washing and drying the passivated aluminum hydride.
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Abstract
Systems and methods for producing microcrystalline alpha alane are provided herein. An exemplary process comprises the elimination of the crystallization aid lithium borohydride through the use of excess lithium aluminum hydride or sodium borohydride. Further exemplary processes comprise methods for passivating microcrystalline alpha alane using a weak acid in a nonaqueous solvent solution.
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10 Claims
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1. A method for stabilizing aluminum hydride, comprising:
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producing aluminum hydride; placing the aluminum hydride in a nonaqueous solvent; adding a weak acid solution to the nonaqueous solvent and allow the aluminum hydride to contact the weak acid solution for a period of time to form passivated aluminum hydride; separating the passivated aluminum hydride from the solvent and weak acid solution; and washing and drying the passivated aluminum hydride. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification