Broad-Spectrum Liquid- and Gas-Phase Decontamination of Chemical Warfare Agents by One-Dimensional Heteropolyniobates

A wide range of chemical warfare agents and their simulants are catalytically decontaminated by a new one‐dimensional polymeric polyniobate (P‐PONb), K12[Ti2O2][GeNb12O40]⋅19 H2O (KGeNb) under mild conditions and in the dark. Uniquely, KGeNb facilitates hydrolysis of nerve agents Sarin (GB) and Soma...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2016-06, Vol.55 (26), p.7403-7407
Main Authors: Guo, Weiwei, Lv, Hongjin, Sullivan, Kevin P., Gordon, Wesley O., Balboa, Alex, Wagner, George W., Musaev, Djamaladdin G., Bacsa, John, Hill, Craig L.
Format: Article
Language:English
Subjects:
Ambient temperature
Biological & chemical weapons
Catalysis
Chemical warfare
Chemical warfare agents
Decontamination
heteropolyniobates
Hydrolysis
Illumination
Isotope effect
Mustard
Nerve agents
Neutralizing
Sarin
Soman
Temperature effects
Vapor phases
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Summary:A wide range of chemical warfare agents and their simulants are catalytically decontaminated by a new one‐dimensional polymeric polyniobate (P‐PONb), K12[Ti2O2][GeNb12O40]⋅19 H2O (KGeNb) under mild conditions and in the dark. Uniquely, KGeNb facilitates hydrolysis of nerve agents Sarin (GB) and Soman (GD) (and their less reactive simulants, dimethyl methylphosphonate (DMMP)) as well as mustard (HD) in both liquid and gas phases at ambient temperature and in the absence of neutralizing bases or illumination. Three lines of evidence establish that KGeNb removes DMMP, and thus likely GB/GD, by general base catalysis: a) the k(H2O)/k(D2O) solvent isotope effect is 1.4; b) the rate law (hydrolysis at the same pH depends on the amount of P‐PONb present); and c) hydroxide is far less active against the above simulants at the same pH than the P‐PONbs themselves, a critical control experiment. POM against CWAs: A new one‐dimensional polymeric polyniobate, K12[Ti2O2][GeNb12O40], removes a wide range of chemical warfare agents (CWAs) and their simulants. The transformations are catalytic and proceed effectively under very mild conditions and in the dark.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201601620