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US 2022/0282041 A1Published application
Poly(aryl ether) based polymers and associated gas separation membranes
AssigneeMassachusetts Institute of Technology
InventorsTimothy Manning Swager, Zachary Smith, Francesco Maria Benedetti, Sheng Guo
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Abstract
Compositions and methods related to the synthesis and application of poly(aryl ether)s are generally described.
Claims36
A method of making a gas separation membrane comprising a poly(aryl ether), comprising:
- providing a first prepolymer comprising a monomer of the formula (X)x—Ar—(OH)y, wherein Ar comprises at least one aryl or heteroaryl group, X is a halogen or a halogen equivalent, each X is the same or different, and x+y is at least two;
- providing a second prepolymer comprising a comonomer of the formula (X)x—Ar′—(OH)y wherein Ar« comprises at least one aryl or heteroaryl group, X is a halogen or a halogen equivalent, each X is the same or different, and x+y is at least two;
- providing a catalyst;
- providing a base;
- reacting the first prepolymer with the second prepolymer in the presence of the catalyst and the base to provide the poly(aryl ether);
- and
- forming a gas separation membrane comprising the composition.
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A gas separation membrane comprising a composition, the composition comprising:
- a poly(aryl ether) of the formula [(—Ar—O—Ar′—O—)n] or [(—Ar′—O—Ar—O—)n], wherein Ar comprises at least one aryl or heteroaryl group, Ar′ comprises a spirobifluorene, n is greater than 1, and the poly(aryl ether) has a BET surface area greater than or equal to 200 m2/g.
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A method of separating a target gas from a mixture of gases, comprising:
- exposing the mixture of gases to a gas separation membrane, wherein the gas separation membrane comprises a poly(aryl ether) of the formula [(—Ar—O—Ar′—O—)n] or [(—Ar′—O—Ar—O—)n], wherein Ar comprises at least one aryl or heteroaryl group, Ar′ comprises a spirobifluorene, n is greater than 1, and the poly(aryl ether) has a BET surface area greater than or equal to 200 m2/g;
- and
- separating the target substance from the mixture of substances.
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Dependencies are inferred from the claim text.