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US 2024/0408574 A1Published application
Adsorption of carbon dioxide by swing adsorption methods
OwnerShengqian Ma, Bin Liang +1inventors
InventorsShengqian Ma, Bin Liang, Benjamin A. McCool
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Abstract
A method is provided for capturing CO2 from a gas mixture comprising CO2. The method includes contacting the gas mixture with a sorbent comprising a porous polymer. The porous polymer selectively binds CO2 in the gas mixture to yield bound CO2, thereby removing CO2 from the gas. Upon exposure to moisture, the porous polymer releases the bound CO2 to yield a recycled porous polymer.
Claims21
A method for capturing CO2 from a gas mixture comprising CO2, the method comprising:
- contacting the gas mixture with a sorbent comprising a porous polymer, the porous polymer comprising a repeat unit represented by the formula:
- wherein each of R1, R4, and R5 is independently H, NH2, or a quaternary ammonium ion represented by
- wherein each of R5 and R6 is independently a C1-C3 alkyl group, R7 is H or a C1-C2 alkyl group, and n is an integer from 1 to 8,
- wherein each of R2 and R3 is independently selected from H,
- or a quaternary ammonium ion represented by
- wherein at least one of R1, R2, R3, R4, and R5 is a quaternary ammonium ion,
- wherein at least one of R2 and R3 is
- wherein the porous polymer selectively binds CO2 in the gas mixture to yield bound CO2, thereby removing CO2 from the gas, and
- upon exposure to moisture, the porous polymer releases the bound CO2 to yield a recycled porous polymer.
6 more elements
Dependencies are inferred from the claim text.