Electrical synthesis of continuous metal-organic framework memranes

Patent metadata

Field	Value
Publication number	US-2024316508-A1
Application number	US-202218579441-A
Country	US
Kind code	A1
Filing date	Jul 13, 2022
Priority date	Jul 13, 2021
Publication date	Sep 26, 2024
Grant date	—

Abstract

Embodiments include a method of making a continuous metal-organic framework membrane, the method including contacting a rare earth- or zirconium-containing compound, an acid, a solvent, and optionally water sufficient to form a hexanuclear cluster solution, contacting the hexanuclear cluster solution with one or more ditopic ligands sufficient to form a metal-organic framework (MOF) solution, contacting the MOF solution with a support, and applying a current to the MOF solution with support, sufficient to provide a continuous metal-organic framework membrane.

First claim

1 . A method of making a continuous metal-organic framework membrane, the method comprising:
contacting a rare earth- or zirconium-containing compound, an acid, a solvent, and optionally water, sufficient to form a hexanuclear cluster solution; contacting the hexanuclear cluster solution with one or more ditopic ligands, sufficient to form a metal-organic framework (MOF) solution; contacting the MOF solution with a support; applying a current to the MOF solution with support, sufficient to provide a continuous fcu metal-organic framework membrane.

2 . The method of claim 1 , wherein the rare earth-containing compound comprises one or more of La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, Tb or Y, for example, terbium (Tb3+) and yttrium (Y3+).

3 . The method of claim 1 , wherein the rare earth-containing compound comprises yttrium.

4 . The method of claim 1 , wherein the acid comprises one or more of 2-flouro benzoic acid, formic acid, acetic acid, and propionic acid.

5 . The method of claim 1 , wherein the solvent comprises one or more of DMF, water, and methanol.

6 . The method of claim 1 , wherein the one or more ditopic ligands comprises one or more of carboxylate or tetrazolate functional groups, fumaric acid, mesaconic acid, terephthalic acid. 1,4-naphthalenedicarboxylic acid, 2-aminoterephthalic acid.

7 . The method of claim 1 , wherein the support comprises stainless steel or alumina.

8 . The method of claim 1 , wherein the support further comprises a conductive layer.

9 . The method of claim 8 , wherein the conductive layer comprises one or more of Pt, Pd, and Au.

10 . The method of claim 1 , wherein the fcu metal-organic framework membrane comprises one or more of Y-fum-fcu-MOF, Zr-fum-fcu-MOF, Y-mes-fcu-MOF, Zr-mes-fcu-MOF, Y-tpa-fcu-MOF, Zr-tpa-fcu-MOF, Y-naph-fcu-MOF, Zr-naph-fcu-MOF, and Y-aminotpa-fcu-MOF, and mixed ligand combinations.

11 . The method of claim 1 , wherein applying a current comprises applying about 0.1 mA/cm 2 to about 2.5 mA/cm 2 , about 0.2 mA/cm 2 to about 2 mA/cm 2 , about 1.2 mA/cm 2 to about 1.8 mA/cm 2 , about 1.5 mA/cm 2 , about 0.15 mA/cm 2 to about 0.3 mA/cm 2 , about 0.25 mA/cm 2 .

12 . A continuous metal-organic framework membrane system, comprising:
a support; and an fcu metal-organic framework membrane layer positioned on at least a portion of the support and wherein the fcu metal-organic framework membrane comprises a thickness of less than about 150 nm.

13 . The system of claim 12 , wherein the support comprises one or more of stainless steel or alumina.

14 . The system of claim 12 , wherein the fcu metal-organic framework membrane layer comprises one or more of a rare earth or zirconium fcu metal-organic framework membrane layer.

15 . The system of claim 12 , wherein the fcu metal-organic framework membrane layer comprises one or more of Y-fum-fcu-MOF, Zr-fum-fcu-MOF, Y-mes-fcu-MOF, Zr-mes-fcu-MOF, Y-tpa-fcu-MOF, Zr-tpa-fcu-MOF, Y-naph-fcu-MOF, Zr-naph-fcu-MOF, and Y-aminotpa-fcu-MOF, and mixed ligand combinations.

16 . The continuous metal-organic framework membrane system of claim 12 for the separation of gases.

Assignees

• Univ King Abdullah Sci & Tech

Inventors

• Eddaoudi Mohamed
• Zhou Sheng
• Shekhah Osama
• Jia Jiangtao

Classifications

• B01D2257/102

  Nitrogen · CPC title

• B01D2256/245

  Methane · CPC title

• B01D67/0079

  Manufacture of membranes comprising organic and inorganic components · CPC title

• B01D53/228

  characterised by specific membranes · CPC title

• B01D69/108

  Inorganic support material · CPC title