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AssigneeNorthwestern University
InventorsPatrick J. Ryan, Omar K. Farha, Linda J. Broadbelt, Randall Q. Snurr, Youn-Sang Bae
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Metal-organic framework (MOF) materials are provided and are selectively adsorbent to xenon (Xe) over another noble gas such as krypton (Kr) and/or argon (Ar) as a result of having framework voids (pores) sized to this end. MOF materials having pores that are capable of accommodating a Xe atom but have a small enough pore size to receive no more than one Xe atom are desired to preferentially adsorb Xe over Kr in a multi-component (Xe—Kr mixture) adsorption method. The MOF material has 20% or more, preferably 40% or more, of the total pore volume in a pore size range of 0.45-0.75 nm which can selectively adsorb Xe over Kr in a multi-component Xe—Kr mixture over a pressure range of 0.01 to 1.0 MPa.
A method of separating Xe and another noble gas in a gas mixture, comprising contacting the gas mixture with an adsorbent material comprising a metal-organic framework (MOP) material wherein the MOF material has 20% or more of the total pore volume of a size to receive no more than one Xe atom for selectively adsorbing Xe from the gas mixture,
A method of separating Xe and another noble gas in a gas mixture, comprising contacting the gas mixture with an adsorbent material comprising a metal-organic framework (MOF) material wherein the MOF material has 20% or more of the total pore volume of a size to receive no more than one Xe atom for selectively adsorbing Xe from the gas mixture,
Dependencies are inferred from the claim text.