A monolith comprises a zeolite, a thermally conductive carbon, and a binder. The zeolite is included in the form of beads, pellets, powders and mixtures thereof. The thermally conductive carbon can be carbon nano-fibers, diamond or graphite which provide thermal conductivities in excess of about 100
A monolith comprises a zeolite, a thermally conductive carbon, and a binder. The zeolite is included in the form of beads, pellets, powders and mixtures thereof. The thermally conductive carbon can be carbon nano-fibers, diamond or graphite which provide thermal conductivities in excess of about 100 W/m��K to more than 1,000 W/m��K. A method of preparing a zeolite monolith includes the steps of mixing a zeolite dispersion in an aqueous colloidal silica binder with a dispersion of carbon nano-fibers in water followed by dehydration and curing of the binder is given.
대표청구항▼
We claim: 1. A monolith, comprising: zeolite, thermally conductive material, and a binder, wherein said material has a room temperature thermal conductivity greater than 100 W/m��K. 2. The monolith of claim 1, wherein said zeolite is in the form of beads, pellets, powders or any mixture of beads
We claim: 1. A monolith, comprising: zeolite, thermally conductive material, and a binder, wherein said material has a room temperature thermal conductivity greater than 100 W/m��K. 2. The monolith of claim 1, wherein said zeolite is in the form of beads, pellets, powders or any mixture of beads, pellets, or powders. 3. The monolith of claim 1, wherein said material is carbon. 4. The monolith of claim 3, wherein said carbon has a room temperature thermal conductivity of between 200 and 2,500 W/m��K. 5. The monolith of claim 3, wherein said carbon comprises carbon nano-fibers. 6. The monolith of claim 3, wherein said carbon comprises about 2 to about 40 weight percent of said monolith. 7. The monolith of claim 1, wherein said binder comprises a ceramic binder. 8. The monolith of claim 7, wherein said ceramic binder is derived from colloidal silica. 9. The monolith of claim 1, wherein said binder comprises about 5 to about 20 weight percent of said monolith. 10. A method of preparing the monolith of claim 1, comprising the steps of: providing a zeolite suspension in a binder or binder precursor in a liquid or solution state; providing a suspension of a thermally conductive carbon in a liquid miscible in said binder liquid or solution; mixing said zeolite suspension with said thermally conductive carbon suspension to form a mixture; filling a mold with said mixture; removing volatile components from said mixture in said mold; and heating said mold to form a monolith article. 11. The method of claim 10, further comprising the step of removing said monolithic article from said mold. 12. The method of claim 10, further comprising the step of machining said article. 13. The method of claim 12, wherein said machining comprises cutting or drilling. 14. The method of claim 10, wherein said binder precursor comprises colloidal silica. 15. The method of claim 10, wherein said suspension of thermally conductive carbon includes a dispersing agent. 16. An evaporative cooling system, comprising: a water-containing chamber; a monolith chamber containing the monolith claim 1, and a vapor transport channel connecting said water-containing chamber and said monolith chamber. 17. The evaporative cooling system of claim 16, further comprising a valve in said channel.
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