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AssigneeCalifornia Institute of Technology
InventorsNicholas P. Stadie, Brent T Fultz, Channing Ahn, Maxwell Murialdo
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Provided are methods for storing gases on porous adsorbents, methods for optimizing the storage of gases on porous adsorbents, methods of making porous adsorbents, and methods of gas storage of optimized compositions, as in systems containing porous adsorbents and gas adsorbed on the surface of the porous adsorbent. The disclosed methods and systems feature a constant or increasing isosteric enthalpy of adsorption as a function of uptake of the gas onto the exposed surface of a porous adsorbent. Adsorbents with a porous geometry and surface dimensions suited to a particular adsorbate are exposed to the gas at elevated pressures in the specific regime where n/V (density) is larger than predicted by the ideal gas law by more than several percent.
A method for storing a gas on a porous adsorbent, the method comprising the steps of:
A method of making a porous adsorbent having a first chemical composition, the method comprising:
A stored gas composition comprising a porous adsorbent and a gas adsorbed on an exposed surface of the porous adsorbent, wherein the porous adsorbent has a first chemical composition and a first plurality of ordered pore structures characterized by a first pore size distribution, wherein the first pore size distribution provides a constant or increasing isosteric enthalpy of adsorption as a function of uptake of the gas on the exposed surface of the porous adsorbent for a pressure of the gas exposed to the porous adsorbent selected from the range of 1 MPa to 12 MPa and at a temperature the range of −169° C. to 125° C.;
Dependencies are inferred from the claim text.