Chromium-based metal-organic frameworks for water adsorption-related applications and gas storage

Patent metadata

Field	Value
Publication number	US-11701637-B2
Application number	US-201816642525-A
Country	US
Kind code	B2
Filing date	Sep 19, 2018
Priority date	Sep 19, 2017
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

Embodiments of the present disclosure describe a metal-organic framework (MOF) composition comprising a plurality of metal clusters, wherein the metal is chromium; and one or more tetratopic ligands; wherein the metal clusters and ligands associate to form a MOF with soc topology. A method of making a MOF comprising contacting a template MOF of formula Fe-soc-MOF and a reactant including chromium in a presence of dimethylformamide sufficient to replace Fe with Cr and form an exchanged MOF of formula Cr-soc-MOF. A method of sorbing water vapor comprising exposing a Cr-soc-MOF to an environment; and sorbing water vapor using the Cr-soc-MOF.

First claim

What is claimed is:

1. A method of sorbing water vapor, comprising:
exposing a Cr-soc-MOF to an environment; and
sorbing water vapor using the Cr-soc-MOF, wherein the Cr-soc-MOF adsorbs water vapor as a relative humidity of the environment increases.

2. The method of claim 1 , wherein the Cr-soc-MOF desorbs water vapor as a relative humidity of the environment decreases.

3. The method of claim 1 , wherein a working capacity of the Cr-soc-MOF is between about 35% RH and about 65% RH.

4. The method of claim 1 , wherein a mass of adsorbed water is about two times a weight of the Cr-soc-MOF.

5. The method of claim 1 , wherein a temperature of the environment is about room temperature.

6. The method of claim 1 , wherein adsorbed water vapor is nearly completely desorbed by reducing relative humidity to about 25% RH.

7. The method of claim 1 , wherein adsorbed water vapor is nearly completely desorbed by reducing relative humidity without heating and/or applying evacuation.

8. The method of claim 1 , wherein the Cr-soc-MOF is stable over at least about 100 adsorption/desorption cycles.

9. The method of claim 1 , wherein the environment is a confined or nearly confined space.

10. A method of making a metal-organic framework (MOF), comprising:
contacting a template MOF of formula Fe-soc-MOF and a reactant including chromium in a presence of dimethylformamide (DMF) sufficient to replace Fe with Cr and form an exchanged MOF of formula Cr-soc-MOF.

11. The method of claim 10 , wherein the exchanged MOF is one or more of isostructural and isoreticular with the template MOF.

12. The method of claim 10 , wherein the exchanged MOF includes at least about 90% of chromium.

Assignees

• Univ King Abdullah Sci & Tech

Inventors

• Abtab Sk Md Towsif
• Belmabkhout Youssef
• Bhatt Prashant
• Eddaoudi Mohamed

Classifications

• B01J20/226 Primary

  Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF] (preparation of metal complexes containing carboxylic acid moieties C07C51/418; MOF's per se C07F) · CPC title

• B01D53/02

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title

• B01D53/261

  by adsorption · CPC title

• B01D53/28

  Selection of materials for use as drying agents · CPC title

• B01J20/3085

  Chemical treatments not covered by groups B01J20/3007 - B01J20/3078 · CPC title