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US 11,267,702 B1Granted
Solid state synthesis of metal borohydrides
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsVitalie Stavila, James Lawrence White
Life of this patent
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Abstract
A method for obtaining solid-state metal borohydrides without toxic precursors and expensive solvents includes dry mixing of metal hydrides and metal polyhydro-closo-borate starting materials. High pressure and heating is also used in the method. These materials can be used for hydrogen storage, general reducing agents, organic synthesis, wastewater treatment, and paper pulp bleaching.
Claims20
A process for making a metal borohydride, comprising the steps of:
- mixing without solvent a metal polyhydro-closo-borate and a metal hydride under an inert atmosphere to form a mixture;
- charging hydrogen gas to the mixture at a pressure of at least approximately 25 MPa, and heating the mixture at a temperature of approximately 350° C. to 540° C. to produce a metal borohydride product;
- the metal in the metal polyhydro-closo-borate and the metal hydride is selected from the group consisting of Li, Na, K, Rb, and Cs.
Dependencies are inferred from the claim text.