# US 10,864,479 B2 · Zeolite-like metal-organic framework membrane

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- Number: US 10,864,479 B2
- Document ID: US10864479B2
- Status: Granted
- Kind: B2
- Application number: 16/159,903
- Filed: 2018-10-15
- Published: 2019-02-14
- Granted: 2020-12-15
- Earliest claimed: 2013-11-29
- Assignees: King Abdullah University of Science and Technology
- Applicants: King Abdullah University of Science and Technology
- Inventors: Mohamed Eddaoudi; Bassem A. Almaythalony; Osama Shekhah; Youssef Belmabkhout
- Web page: https://patentgrep.com/patent/US10864479B2

## CPC

- B01D 53/228: {characterised by specific membranes}
- B01D 53/28: Selection of materials for use as drying agents
- B01D 67/0051: {by controlled crystallisation, e,.g. hydrothermal growth}
- B01D 69/02: characterised by their properties
- B01D 69/108: {Inorganic support material}
- B01D 71/0281: {Zeolites}
- B01D 2257/504: Carbon dioxide
- B01D 2325/14: Membrane materials having negatively charged functional groups
- B01D 2325/52: Crystallinity
- Y02C 20/40: of CO2
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]

## Abstract

Metal organic framework membranes can be used in gas separation applications.

## Claims

### Claim 1

A thin-film membrane comprising a continuous zeolite-like metal-organic framework (ZMOF) thin film intergrown on a substrate; wherein the continuous ZMOF thin film has a sodalite topology.

### Claim 2 (depends on 1)

The membrane of claim 1, wherein the continuous ZMOF thin film includes a metal and an organic linker.

### Claim 3 (depends on 2)

The membrane of claim 2, wherein the metal is selected from the group consisting of transition metals, Group 13 metals, and lanthanide metals.

### Claim 4 (depends on 2)

The membrane of claim 2, wherein the organic linker includes a heteroaromatic group containing a nitrogen.

### Claim 5 (depends on 2)

The membrane of claim 2, wherein the organic linker is an imidazole-based linker or pyrimidine-based linker.

### Claim 6 (depends on 1)

The membrane of claim 1, wherein the thin-film membrane is cation-exchanged with Li+, Na+, K+, Mg2+, or Ca2+.

### Claim 7

A thin-film membrane comprising a continuous zeolite-like metal-organic framework (ZMOF) thin film intergrown on a substrate, wherein the ZMOF thin film includes a metal selected from the group consisting of transition metals, Group 13 metals, and lanthanide metals, and an organic linker.

### Claim 8 (depends on 7)

The membrane of claim 7, wherein the organic linker includes a heteroaromatic group containing a nitrogen.

### Claim 9 (depends on 7)

The membrane of claim 7, wherein the organic linker is an imidazole-based linker or pyrimidine-based linker.

### Claim 10 (depends on 7)

The membrane of claim 7, wherein the thin-film membrane is cation-exchanged with Li+, Na+, K+, Mg2+, or Ca2+.

### Claim 11 (depends on 7)

The membrane of claim 7, wherein the thin-film membrane has a selectivity for CO2 over one or more of He, H2, N2, O2, CH4, C2H4, and C2H6.

### Claim 12

A method of separating chemical species, comprising:
passing a fluid composition through a thin-film membrane, wherein the thin-film membrane includes a continuous zeolite-like metal-organic framework (ZMOF) thin film intergrown on a substrate.

### Claim 13 (depends on 12)

The method of claim 12, wherein the fluid composition includes He, H2, N2, O2, CO2, CH4, C2H4, C2H6, or a combination thereof.

### Claim 14 (depends on 13)

The method of claim 13, wherein the thin-film membrane has a selectivity for CO2 over one or more of He, H2, N2, O2, CH4, C2H4, C2H6.

### Claim 15 (depends on 12)

The method of claim 12, wherein the continuous ZMOF thin film has a sodalite topology.

### Claim 16 (depends on 12)

The method of claim 12, wherein the continuous ZMOF thin film includes a metal and an organic linker.

### Claim 17 (depends on 16)

The method of claim 16, wherein the metal is selected from the group consisting of transition metals, Group 13 metals, and lanthanide metals.

### Claim 18 (depends on 16)

The method of claim 16, wherein the organic linker includes a heteroaromatic group containing a nitrogen.

### Claim 19 (depends on 16)

The method of claim 16, wherein the organic linker is an imidazole-based linker or pyrimidine-based linker.

### Claim 20 (depends on 12)

The method of claim 12, wherein the thin-film membrane is cation-exchanged with Li+, Na+, K+, Mg2+, or Ca2+.