Method for detoxifying liquid chemical warfare agents using surface-modified metal organic framework

Patent metadata

Field	Value
Publication number	US-11400331-B2
Application number	US-201816603899-A
Country	US
Kind code	B2
Filing date	Apr 13, 2018
Priority date	Apr 13, 2017
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

A method of detoxifying a liquid chemical agent is provided using a surface-modified metal organic framework having an amine-based compound deposited on a surface and pores thereof, or bonded to the inside of a frame, wherein when the surface-modified metal organic framework comes into contact with the liquid chemical agent, a reaction with moisture in the atmosphere occurs and, the liquid chemical agent is removed through a hydrolysis reaction, thereby detoxifying chemical agents, such as nerve agents and vesicants, and assuring a high detoxification effect on liquid chemical agents at room temperature even with a small amount of the surface-modified metal organic framework.

First claim

The invention claimed is:

1. A method of detoxifying a liquid chemical agent using a surface-modified metal organic framework, the method comprising:
preparing the surface-modified metal organic framework having an amine-based compound deposited on a surface and pores thereof, or bonded to an inside of a frame, wherein the amine-based compound is triethylenediamine; and
bringing the surface-modified metal organic framework into contact with the liquid chemical agent so that a decomposition reaction is performed to remove the liquid chemical agent, thereby achieving detoxification,
wherein the surface-modified metal organic framework contains 6 to 20 wt % of the amine-based compound based on 100 wt % of the entire surface-modified metal organic framework.

2. The method of claim 1 , wherein the liquid chemical agent is any one selected from the group consisting of bis-(2-chloroethyl) sulfide, pinacolyl methylphosphonofluoridate, ethyl N,N-dimethylphosphoroamidocyanidate, isopropyl methylphosphonofluoridate, trichloronitromethane, O-ethyl S -(2-diisopropylamino)ethylmethylphosphonothioate, and a derivative thereof, or a mixture thereof.

3. The method of claim 1 , wherein the metal organic framework includes metal ions of one or more of zirconium (Zr), iron (Fe), titanium (Ti), copper (Cu), hafnium (Hf), vanadium (V), zinc (Zn), cobalt (Co), nickel (Ni), barium (Ba), calcium (Ca), strontium (Sr), niobium (Nb), chromium (Cr), tantalum (Ta), molybdenum (Mo), rubidium (Ru), osmium (Os), tungsten (W), manganese (Mn), rhenium (Re), palladium (Pd), platinum (Pt), silver (Ag), gold (Au), yttrium (Y), germanium (Ge), bismuth (Bi), arsenic (As), lead (Pb), indium (In), gallium (Ga), antimony (Sb), and a derivative thereof as a central metal.

4. The method of claim 3 , wherein the metal organic framework is any one selected from among MOF-808, UiO-66, UiO-66-NH 2 , UiO-67, UiO-67-NH 2 , and MIL-100(Fe).

5. The method of claim 1 , wherein the detoxification includes reacting the surface-modified metal organic framework with moisture in an atmosphere for a reaction time of 5 minutes to 4 hours to thus remove the liquid chemical agent through a hydrolysis reaction.

Assignees

• Agency Defense Dev

Inventors

• Ryu Sam-Gon
• Kim Min-Kun
• Jung Hyun-Sook

Classifications

• A62D3/34 Primary

  Dehalogenation using reactive chemical agents able to degrade · CPC title

• A62D3/35 Primary

  by hydrolysis · CPC title

• A62D2101/22

  containing halogen · CPC title

• A62D2101/26

  containing nitrogen or phosphorus · CPC title

• A62D2101/28

  containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen · CPC title