Method and composition in which metal hydride particles are embedded in a silica network
AssigneeWestinghouse Savannah River Company
InventorLeung K. Heung
Life of this patent
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Abstract
A silica embedded metal hydride composition and a method for making such a composition. The composition is made via the following process: A quantity of fumed silica is blended with water to make a paste. After adding metal hydride particles, the paste is dried to form a solid. According to one embodiment of the invention, the solid is ground into granules for use of the product in hydrogen storage. Alternatively, the paste can be molded into plates or cylinders and then dried for use of the product as a hydrogen filter. Where mechanical strength is required, the paste can be impregnated in a porous substrate or wire network.
Claims28
A composition for separating hydrogen from a diverse gaseous stream, comprising:
- a network of silica particles, said network having a plurality of pores;
- metal hydride particles disposed throughout said network, said metal hydride particles being larger than the size of said pores;
- whereby said metal hydride particles are substantially retained by said network after repeated exposure of said metal hydride particles to hydrogen.
A silica embedded metal hydride composition, said composition made by a process comprising the steps of:
- blending fumed silica into water to make a first paste;
- adding metal hydride particles to said first paste to make a second paste;
- and
- drying said second paste to form a solid.
A method for embedding metal hydride particles in a network of silica particles, comprising the following steps:
- blending fumed silica into water to make a first paste;
- adding metal hydride particles to said first paste to make a second paste;
- and
- drying said second paste to form a solid.
A method for embedding metal hydride particles in a network of silica particles, comprising the following steps:
- blending a fumed silica into water to make a first paste;
- adding metal hydride particles to said first paste to make a metal hydride paste;
- blending a liquid that is non-soluble in water into said metal hydride paste, thereby forming a plurality of particulates within said metal hydride paste;
- and
- drying said metal hydride paste to form a solid.
Dependencies are inferred from the claim text.