Metal-organic materials (MOMS) for polarizable gas adsorption and methods of using MOMS

Patent metadata

Field	Value
Publication number	US-9504986-B2
Application number	US-201314431851-A
Country	US
Kind code	B2
Filing date	Nov 7, 2013
Priority date	Aug 10, 2012
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

Embodiments of the present disclosure provide for multi-component metal-organic materials (MOMs) systems that exhibit permanent porosity and using MOMs to separate components in a gas mixture, methods of separating polarizable gases from a gas mixture, and the like.

First claim

We claim:

1. A method of capturing a polarizable gas in a gas mixture, comprising:
exposing the gas mixture to a multicomponent metal-organic material (MOM) of general formula [ML 2 TIFSIX] n , n is 1 to 10 18 , wherein the gas mixture includes the polarizable gas, wherein the MOM has a greater relative affinity for the polarizable gas than the other components in the gas mixture; wherein M is a divalent or trivalent metal, wherein L is a bifunctional linker molecule based upon two nitrogen donor moieties; and TIFSIX is hexafluorotitanate or hexafluorostannate; and
capturing the polarizable gas in the MOM.

2. The method of claim 1 , wherein the gas mixture includes at least one of the following gases: water vapor, CO 2 , N 2 , H 2 , and CH 4 , wherein the MOM has a greater relative affinity for CO 2 over each one of water vapor, N 2 , H 2 , and CH 4 .

3. The method of claim 1 , wherein the MOM is selected from the group consisting of: [Cu(4,4′-bipyridine) 2 (TiF 6 )] n , where n is 1 to 10 18 and [Cu(4,4′-bipyridine) 2 (SnF 6 )] n , wherein n is 1 to 10 18 .

4. The method of claim 1 , wherein the MOM has a primitive cubic topology.

5. A system for capturing a polarizable gas in a gas mixture, comprising: a first structure including a multidimensional metal-organic material (MOM) having a primitive cubic topology, of general formula [ML.sub.2 TIFSIX].sub.n, n is 1 to 10.sup.18, wherein the gas mixture includes the polarizable gas, wherein the MOM has a greater relative affinity for polarizable gas than the other components in the gas mixture; wherein M is a divalent or trivalent metal, wherein L is a bifunctional linker molecule based upon two nitrogen donor moieties; and TIFSIX is hexafluorotitanate or hexafluorostannate; and a second structure for introducing the gas to the first structure, wherein polarizable gas is substantially removed from the gas mixture after the exposure to the MOM to form a modified gas mixture, wherein the second structure flows the modified gas mixture away from the first structure.

6. The system of claim 5 , wherein the gas mixture includes at least one of the following gases: CO 2 , N 2 , H 2 , and CH 4 , wherein the MOM has a greater relative affinity for CO 2 over each one of N 2 , H 2 , and CH 4 .

7. A method of separating components in a gas mixture, comprising: exposing a gas mixture including a first component and a second component to a multidimensional metal-organic material (MOM), of general formula [ML.sub.2 TIFSIX].sub.n, n is 1 to 10.sup.18, wherein the first component is a polarizable gas, wherein the MOM has a greater relative affinity for the polarizable gas than the other components in the gas mixture; wherein M is a divalent or trivalent metal, wherein L is a bifunctional linker molecule based upon two nitrogen donor moieties; and TIFSIX is hexafluorotitanate or hexafluorostannate, wherein the MOM has a greater relative affinity for the first component over the second component; and capturing the first component in the MOM.

8. The method of claim 7 , wherein the first component is CO.sub.2 and the second gas is N.sub.2.

9. The method of claim 7 , wherein the first component is CO.sub.2 and the second gas is H.sub.2.

10. The method of claim 7 , wherein the first component is CO.sub.2 and the second gas is CH.sub.4.

11. The method of claim 7 , wherein the first component is He and the second gas is natural gas.

Assignees

• Univ South Florida

Inventors

• Zaworotko Michael
• Nugent Patrick
• Rhodus Vanessah

Classifications

• B01D2257/504

  Carbon dioxide · CPC title

• B01D2253/204

  Metal organic frameworks (MOF's) · CPC title

• B01D2253/1122

  Metals · 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

• B01D2256/245

  Methane · CPC title