Impregnation of macrocycle organics to activated carbon

Patent metadata

Field	Value
Publication number	US-9493356-B1
Application number	US-201514802988-A
Country	US
Kind code	B1
Filing date	Jul 17, 2015
Priority date	Jul 17, 2015
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A filtration material is provided for incorporation in a gas filter that includes an Activated Carbon, Impregnated with Copper, Silver, Zinc, Molybdenum, and Triethlyenediamine (ASZM-TEDA) medium and a macrocyclic organic material. The material is impregnated into the medium in proportions of between 1% and 5% of the medium. The material consists of molecules, each with a binding pocket for binding a metal ion. Also, a method is provided for impregnating porphyrin into a medium of ASZM-TEDA for incorporation in a gas filter. The method includes mixing porphyrin and ASZM-TEDA in a first ratio-by-weight of 1:4 of porphyrin to ASZM-TEDA as a mixture in a container; adding dichloromethane to the mixture in a second ratio-by-weight of 1:133 of porphyrin to dichloromethane as a solution in the container; stirring and refluxing the solution under nitrogen, filtering said mixture from the solution as a carbon residue; and drying the residue.

First claim

What is claimed is:

1. A filtration material for incorporation in a gas filter, said material comprising:
an Activated Carbon, Impregnated with Copper, Silver, Zinc, Molybdenum, and Triethlyenediamine (ASZM-TEDA) medium; and
a macrocyclic organic material in proportions of between 1% and 5% by weight of said medium, said material consisting of molecules, each with a binding pocket for complexing a metal ion, wherein said material is impregnated into said medium.

2. The filtration material according to claim 1 , wherein said macrocyclic organic material is porphyrin having a structural formula:

3. The filtration material according to claim 1 , wherein said macrocyclic organic material is phthalocyanine having a structural formula:

4. The filtration material according to claim 1 , wherein said macrocyclic organic material is additionally deposited on an outer surface of said medium.

5. The filtration material according to claim 1 , wherein said metal ion has a valance charge of one of 2+ and 3+.

6. The filtration material according to claim 1 , wherein said metal ion is one of Copper and Zinc.

Assignees

• Hunt Joseph R
• Burgin Timothy P
• Us Navy

Inventors

• Hunt Joseph R
• Burgin Timothy P

Classifications

• B01J20/3236

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

• B01J20/20 Primary

  comprising free carbon; comprising carbon obtained by carbonising processes · CPC title

• B01J20/3248

  the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such · CPC title

• B01J20/223

  containing metals, e.g. organo-metallic compounds, coordination complexes · CPC title

• B01J20/3242

  Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group · CPC title