Broad‐Spectrum Liquid‐ and Gas‐Phase Decontamination of Chemical Warfare Agents by One‐Dimensional Heteropolyniobates
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 09, 2016
- Source ID
- 10.1002/anie.201601620
Entities
People
- Alex Balboa
- Craig L Hill
- Djamaladdin G. Musaev
- George Wayne Wagner
- Hongjin Lv
- John Bacsa
- Kevin P. Sullivan
- Weiwei Guo
- Wesley O Gordon
Organizations
- Defense Threat Reduction Agency
- Edgewood Chemical Biological Center
- Emory University