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Reactive and Catalytic Air Purification Materials

Naval Research Laboratory

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Publications:

PDF Document PublicationAirPurification (546 KB)


Technology Marketing SummarySorbents for the removal of toxic in-dustrial gases such as ammonia and phosgene. The materials offer reactive and/or catalytic sites within a high surface area, hierarchical pore structure.DescriptionThe Naval Research Laboratory (NRL) has developed sorbents for the removal of toxic in-dustrial gases such as ammonia and phosgene. The materials offer reactive and/or catalytic sites within a high surface area, hierarchical pore structure. The reactive/catalytic nature of the materials offers extended lifetimes to typical purification applications. The hierarchical nature of the materials reduces the diffusion limitations often experienced in high surface area sorbents. Catalytic activity can be stimulated through application of an electric current or illumination by visible spectrum light. Catalysis under a range of conditions including var-ied temperature and humidity has been demonstrated. Target selectivity can be controlled through selection of reactive components. Materials with catalytic activity against phosgene have been demonstrated. Removal of ammonia at 4.9 mol/kg has also been described. Incorporation of an optically active moiety offers the potential for self-reporting materials. Attachment of these types of materials to fabrics and surfaces has been demonstrated.Benefits

Reactive and/or catalytic nature extends functional lifetime and removal capacity

Hierarchical morphology reduces diffusion limitations

High surface area, ~1,000 m2/g

Tunable selectivity

Multiple possible material formats

Resistance to temperatures of up to 150°C

Applications and Industries

Catalytic air filters

Chemical protective masks

Self-decontaminating hard-ware

Catalytic membranes

Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
BIO08DevelopmentAvailable10/06/201110/06/2011

Contact NRL About This Technology

To: Rita Manak, Ph.D. <rita.manak@nrl.navy.mil>