Methods to Enhance Separation Performance of Metal-Organic Framework Membranes
AssigneeThe Texas A&M University System
InventorsHae-Kwon Jeong, Hyuk Taek Kwon
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Abstract
A method produces a metal-organic framework on a surface of another metal-organic framework. One embodiment comprises contacting the first metal-organic framework with a ligand and solvent solution; wherein the first metal-organic framework comprises a first ligand and a first metal; wherein the ligand and solvent solution comprises a second ligand that is different from the first ligand in the first metal-organic framework; and allowing the second ligand from the ligand and solvent solution to exchange with the first ligand present in the first metal-organic framework for a period of time suitable to produce the second metal-organic framework on the surface of the first metal-organic framework.
Claims16
A method for producing a second metal-organic framework membrane on the surface of a first metal-organic framework membrane comprising:
- forming the first metal-organic framework membrane on a support;
- contacting the first metal-organic framework membrane with a metal and solvent solution, wherein the first metal-organic framework membrane comprises a first ligand and a first metal, wherein the metal and solvent solution comprises a second metal that is different from the first metal in the first metal-organic framework membrane;
- and
- allowing the second metal from the metal and solvent solution to exchange with the first metal present in the first metal-organic framework membrane for a period of time suitable to produce the second metal-organic framework membrane on the surface of the first metal-organic framework membrane, wherein the second metal-organic framework membrane comprises a second ligand and a second metal.
A membrane comprising:
- a support;
- a first metal-organic framework comprising a first ligand and a first metal;
- and
- a second metal-organic framework formed on the first metal-organic framework, wherein the second metal-organic framework comprises a second ligand and a second metal.
Dependencies are inferred from the claim text.