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US 8,540,802 B2Granted
Adsorptive gas separation of multi-component gases
AssigneeThe Regents of the University of California
InventorsOmar M. Yaghi, Hideki Hayashi, Rahul Banerjee
Life of this patent
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Abstract
The disclosure relates generally to a gas-separation system for separating one or more components from a multi-component gas using Zeolitic imidazolate or imidazolate-derived framework.
Claims12
A method of separating a component gas from a multi-component gas, comprising contacting a functionalized zeolitic framework with the multi-component gas,
- wherein a component of the multi-component gas is selectively adsorbed to the functionalized zeolitic framework by electrostatically interacting with the one or more electron withdrawing group of the pore walls, thereby separating the absorbed component from other components in the multi-component gas,
- wherein the functionalized zeolitic framework is ZIF-68, ZIF-69, or ZIF-70, and
- wherein the method comprises either (a) separating the component gas from a multicomponent gas, where the multicomponent gas is natural gas, or (b) separating the component gas from a multi-component gas that is rich in methane and contains CO2, where the component gas is CO2 and the component gas is adsorbed by the zeolitic framework.
A method of separating a component from a multi-component gas, comprising:
- passing a multi-component gas through a functionalized zeolitic imidazolate framework comprising one or more pore walls that are polar, wherein the component gas is selectively adsorbed to the polar pore walls of the functionalized zeolitic imidazolate framework, wherein the functionalized zeolitic imidazolate framework is ZIF-68, ZIF-69, or ZIF-70, and wherein the multicomponent gas is (a) natural gas, or (b) a multi-component gas that is rich in methane and contains CO2, where the component gas is CO2 and the component gas is adsorbed by the zeolitic framework.
Dependencies are inferred from the claim text.