Zeolite-like metal-organic framework membrane

Patent metadata

Field	Value
Publication number	US-2016296883-A1
Application number	US-201415100513-A
Country	US
Kind code	A1
Filing date	Nov 26, 2014
Priority date	Nov 29, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

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

First claim

1 . A thin film membrane comprising a zeolite-like metal-organic framework, wherein the thin film membrane has a selectivity for CO 2 over H 2 .

2 . The thin film membrane of claim 1 , wherein the thin film membrane is anionic.

3 . The thin film membrane of claim 1 , wherein the thin film membrane has a zeolite-like topology.

4 . The thin film membrane of claim 1 , wherein the thin film membrane is on a support.

5 . The thin film membrane of claim 4 , wherein the support is a porous ceramic substrate.

6 . (canceled)

7 . The thin film membrane of claim 1 , wherein the permeance of the thin film membrane is higher for CO 2 than for CH 4 .

8 - 10 . (canceled)

11 . The thin film membrane of claim 1 , wherein the permeance of the thin film membrane is higher for CO 2 than for N 2 .

12 . (canceled)

13 . The thin film membrane of claim 1 , wherein the permeance of the thin film membrane is higher for CO 2 than for O 2 .

14 . (canceled)

15 . The thin film membrane of claim 1 , wherein the thickness of the thin-film membrane is between 20 and 100 μm.

16 . (canceled)

17 . The thin film membrane of claim 1 , wherein the zeolite-like metal-organic framework includes a linker and a metal.

18 . The thin film membrane of claim 17 , wherein the metal includes a transition metal, group 13 metal or a lanthanide metal.

19 . The thin film membrane of claim 17 , wherein the linker includes a heteroaromatic group.

20 . A method for preparing a zeolite-like metal-organic framework membrane comprising contacting a substrate with a solution mixture of carboxylic acid, an imidazole or a pyrimidine, a metal salt, and a nitric acid to form a zeolite-like metal-organic framework membrane.

21 . The method of claim 20 , wherein the zeolite-like metal-organic framework membrane is anionic.

22 . The method of claim 20 , wherein the zeolite-like metal-organic framework membrane has a sodalite topology.

23 . (canceled)

24 . The method of claim 20 , further comprising activating the substrate.

25 . The method of claim 20 , further comprising heating the reagent while contacting with the substrate.

26 . The method of claim 20 , further comprising contacting the substrate with acetonitrile after contacting with the reagent.

27 . The method of claim 20 , further comprising modifying the zeolite-like metal-organic framework membrane through cation exchange with an alkali metal ion or alkaline earth metal ion.

28 - 29 . (canceled)

30 . A method of separating gases comprising passing a mixture of gases through a thin film membrane comprising a zeolite-like metal-organic framework, wherein the thin film membrane has a selectivity for CO 2 over H 2 .

31 - 45 . (canceled)

Assignees

• Univ King Abdullah Sci & Tech

Inventors

• Eddaoudi Mohamed
• Almaythalony Bassem A
• Shekhah Osama
• Belmabkhout Youssef

Classifications

• B01D53/228 Primary

  characterised by specific membranes · CPC title

• B01D67/0051

  by controlled crystallisation, e,.g. hydrothermal growth · CPC title

• B01D2325/14

  Membrane materials having negatively charged functional groups · CPC title

• B01D71/028

  Molecular sieves (carbon B01D71/021) · CPC title

• B01D69/02

  characterised by their properties · CPC title