Ordered Metal Organic Framework Polymer Membranes
AssigneeUniversity of Connecticut
InventorsYang Qin, Sebastian DiMauro
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Abstract
A composite membrane that includes a polymeric substrate that defines a plurality of pores and a metal organic framework formed within the pores of the substrate. The metal organic framework is formed through interfacial synthesis of an aqueous metal ion and an organic ligand solution within the pores of the substrate. Methods for membrane synthesis are provided that may include a first growth phase and a second growth phase within the pores of the polymeric substrate. The composite membranes may be incorporated into a housing/module for use in gas separation, e.g., in gas separation facilities, including flue gas sorption plants, direct air capture plants, natural gas sweetening pipelines, and olefin/paraffin separation towers.
Claims20
A composite membrane, comprising:
- a. a polymeric substrate that defines a plurality of pores that extend therethrough;
- and
- b. a metal organic framework comprising one or more interfacially synthesized components formed within the plurality of pores;
- wherein the one or more interfacially synthesized components include (i) a first interfacially synthesized component formed from synthesis of a first aqueous metal ion solution including a single metallic ion and a first organic ligand solution, and (ii) optionally, a second interfacially synthesized component formed from synthesis of a second aqueous metal ion solution and a second organic ligand solution.
A method for membrane synthesis, comprising:
- a. providing a polymeric substrate that defines a plurality of pores that extend therethrough;
- b. initiating a first growth phase by exposing a first surface of the polymeric substrate to a first aqueous metal ion solution, and exposing a second surface of the polymeric substrate opposite the first surface to a first organic ligand solution;
- and
- c. optionally initiating a second growth phase by exposing the first surface of the polymeric substrate to a second organic ligand solution, and exposing a second surface of the polymeric substrate opposite the first surface to a second aqueous metal ion solution,
- wherein the first growth phase and, optionally, the second growth phase effectuate interfacial synthesis of a metal organic framework (MOF) within the plurality of pores.
A module for use in a gas separation application, comprising:
- a. a housing;
- and
- b. a composite membrane positioned within the housing, wherein the composite membrane comprises:
- i. a polymeric substrate that defines a plurality of pores that extend therethrough;
- and
- ii. a metal organic framework comprising one or more interfacially synthesized components formed within the plurality of pores;
- wherein the one or more interfacially synthesized components include (i) a first interfacially synthesized component formed from synthesis of a first aqueous metal ion solution including a single metallic ion and a first organic ligand solution, and (ii) optionally, a second interfacially synthesized component formed from synthesis of a second aqueous metal ion solution and a second organic ligand solution.
Dependencies are inferred from the claim text.