Metal-organic frameworks for sorption and sensing applications

Patent metadata

Field	Value
Publication number	US-11857910-B2
Application number	US-201917251471-A
Country	US
Kind code	B2
Filing date	Jun 11, 2019
Priority date	Jun 11, 2018
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

Metal-organic frameworks for capturing one or more of SO 2 , CO 2 , and H 2 O are disclosed herein. Non-limiting examples of metal-organic frameworks include NbOFFIVE-1-Ni and AIFFIVE-1-Ni, among others. The metal-organic frameworks can be used in applications for removing and/or sensing one or more of SO 2 , CO 2 , and H 2 O from a fluid composition or an environment, either of which can proceed under dry or humid conditions and/or at room temperature.

First claim

What is claimed is:

1. A method of capturing chemical species, comprising:
contacting a metal-organic framework with a fluid composition including one or more of SO 2 , CO 2 , and H 2 O,
wherein the metal-organic framework is characterized by the chemical formula NiNbOF 5 (pyrazine) 2 ·x(Solv) or NiAlF 5 (H 2 O)(pyrazine) 2 ·x(solv),
wherein the metal-organic framework comprises a square grid pillared by an inorganic building block, wherein the square grid is Ni(pyrazine) 2 and the inorganic building block is selected from [NbOF 5 ] 2− or [AlF 5 (H 2 O)] 2− ; and
sorbing one or more of SO 2 , CO 2 , and H 2 O from the fluid composition on the metal-organic framework.

2. The method of claim 1 , wherein the fluid composition includes SO 2 at a concentration in the range of 25 ppm to 500 ppm.

3. The method of claim 1 , wherein the fluid composition includes SO 2 and CO 2 , and SO 2 is preferentially sorbed over CO 2 on the metal-organic framework.

4. The method of claim 1 , wherein the fluid composition includes SO 2 and CO 2 , and SO 2 and CO 2 are both sorbed on the metal-organic framework.

5. The method of claim 4 , wherein SO 2 and CO 2 are sorbed about simultaneously on the metal-organic framework.

6. The method of claim 1 , wherein the fluid composition includes CO 2 at a concentration in the range of 400 ppm to 5000 ppm.

7. The method of claim 1 , wherein the fluid composition includes CO 2 and H 2 O, and CO 2 is preferentially sorbed over H 2 O on the metal-organic framework.

8. The method of claim 1 , wherein the fluid composition includes CO 2 and H 2 O, and CO 2 and H 2 O are both sorbed on the metal-organic framework.

9. The method of claim 8 , wherein the CO 2 and H 2 O are sorbed about simultaneously on the metal-organic framework.

10. The method of claim 1 , wherein the sorbing proceeds at about room temperature.

11. A method of detecting one or more analytes, the method comprising:
contacting a sensor to an environment containing one or more of SO 2 , CO 2 , and H 2 O,
wherein the metal-organic framework is characterized by the chemical formula NiNbOF 5 (pyrazine) 2 ·x(Solv) or NiAlF 5 (H 2 O)(pyrazine) 2 ·x(solv);
wherein the sensor includes a layer of a metal-organic framework as a sensing layer, wherein the metal-organic framework comprises a square grid pillared by an inorganic building block, wherein the square grid is Ni(pyrazine) 2 and the inorganic building block is selected from [NbOF 5 ] 2− or [AlF 5 (H 2 O)] 2− ; and
detecting a presence of one or more of SO 2 , CO 2 , and H 2 O in the environment using the sensor.

12. The method of claim 11 , wherein the detecting proceeds at about room temperature.

13. The method of claim 11 , wherein the detecting includes detecting SO 2 optionally in the presence of H 2 O.

14. The method of claim 11 , wherein the detecting includes detecting between 25 ppm SO 2 to 500 ppm SO 2 in the environment.

15. The method of claim 11 , wherein the detecting includes detecting CO 2 optionally in the presence of H 2 O.

16. The method of claim 11 , wherein the detecting includes detecting between 400 ppm of CO 2 and 5000 ppm of CO 2 in the environment.

17. The method of claim 11 , wherein the detecting includes detecting H 2 O optionally in the presence of CO 2 .

18. The method of claim 11 , wherein the detecting includes detecting relative humidity levels in the environment below about 40% RH and/or greater than about 60% RH.

19. The method of claim 11 , wherein the sensor is a capacitive sensor comprising an interdigitated electrode, wherein the sensing layer is deposited on the interdigitated electrode of the capacitive sensor, wherein the presence of one or more of SO 2 , CO 2 , and H 2 O is detected by measuring a change in capacitance in the sensing layer.

20. The method of claim 11 , wherein the sensor is a QCM sensor comprising an electrode, wherein the sensing layer is deposited on the electrode of the QCM, wherein the presence of one or more of SO 2 , CO 2 , and H 2 O is detected by measuring a change in resonance frequency in the sensing layer.

Assignees

• Univ King Abdullah Sci & Tech

Inventors

• Tchalala Mohamed Rachid
• Nanaiah Karumbaiah
• Adil Karim
• Belmabkhout Youssef
• Eddaoudi Mohamed
• Salama Khaled N

Classifications

• B01D53/04 Primary

  with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title

• B01J20/226

  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

• G01N27/226

  Construction of measuring vessels; Electrodes therefor · CPC title

• G01N29/022

  Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices (microdevices per se B81B) · CPC title

• G01N29/036

  by measuring frequency or resonance of acoustic waves · CPC title