Metal-organic frameworks for the removal of multiple liquid phase compounds and methods for using and making same

Patent metadata

Field	Value
Publication number	US-12486182-B2
Application number	US-202318195231-A
Country	US
Kind code	B2
Filing date	May 9, 2023
Priority date	Aug 27, 2018
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

The present invention is directed to a ligated metal-organic framework (MOF) for use in removing both anionic and cationic species from a liquid or liquid stream. The present invention also provides methods for placing the MOF on a substrate to form a MOF-containing product that can be used in the removal of certain species from a given fluid. The MOF may be a Zr-based MOF, such as NU-1000, for removal of certain anions, such as oxy-anions, or having an attached thiosulfonyl-thiol (—SO 2 —S—R 2 —SH, where R 2 is an alkyl group) ligand for complexation with certain cationic species in addition to the anions. The substrate may be any substrate to which a given MOF may be attached, including inert polypropylene polymer resin beads, a macroscopic fabric such as a mesh material or mesh filter, and a molecular fabric.

First claim

What is claimed is:

1 . A chemical compound having an absorbed liquid phase oxy-anion and an absorbed liquid phase cation, comprising:
a chemical compound having the formula R 1 —SO 2 —S—R 2 —SH, wherein R 1 comprises a zirconium-based metal-organic framework and R 2 comprises an alkyl; an absorbed liquid phase oxy-anion attached to said chemical compound; and an absorbed liquid phase cation attached to said chemical compound.

2 . The chemical compound of claim 1 , wherein said zirconium-based metal-organic framework comprises a pendant benzyl group attached to an organic linker, wherein R 2 comprises ethyl or propyl, wherein said absorbed liquid phase oxy-anion comprises selenate, and wherein said absorbed liquid phase cation comprises lead.

3 . The chemical compound of claim 1 , wherein R 2 comprises ethyl.

4 . The chemical compound of claim 3 , wherein said zirconium-based metal-organic framework comprises a pendant benzyl group attached to an organic linker.

5 . The chemical compound of claim 3 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound.

6 . The chemical compound of claim 3 , further comprising:
a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

7 . The chemical compound of claim 3 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound; and a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

8 . The chemical compound of claim 3 , wherein said metal-organic framework comprises MOF 808.

9 . The chemical compound of claim 8 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound.

10 . The chemical compound of claim 8 , further comprising:
a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

11 . The chemical compound of claim 8 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound; and a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

12 . The chemical compound of claim 1 , wherein R 2 comprises propyl.

13 . The chemical compound of claim 12 , wherein said zirconium-based metal-organic framework comprises a pendant benzyl group attached to an organic linker.

14 . The chemical compound of claim 12 , wherein said chemical compound is attached to a substrate.

15 . The chemical compound of claim 12 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound.

16 . The chemical compound of claim 12 , further comprising:
a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

17 . The chemical compound of claim 12 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound; and a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

18 . The chemical compound of claim 12 , wherein said metal-organic framework comprises MOF 808.

19 . The chemical compound of claim 18 , further comprising:
a liquid phase oxy-anion selected from the group consisting of oxy-anions of selenium, oxy-anions of antimony, oxy-anions of lead, and combinations thereof complexed with the chemical compound.

20 . The chemical compound of claim 18 , further comprising:
a liquid phase cation selected from the group consisting of lead, mercury, and combinations thereof complexed with the chemical compound.

Assignees

• Electric Power Res Institute Inc

Inventors

• Frattini Paul L
• Wells Daniel M
• Howarth Ashlee J
• Copeman Christopher James
• Fruzzetti Keith Paul

Classifications

• B01J20/3208

  Polymeric carriers, supports or substrates · CPC title

• B01J20/3236 Primary

  containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts · CPC title

• B01J20/3085

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

• B01D2253/204

  Metal organic frameworks (MOF's) · CPC title

• 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