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

Weiwei Guo, Hongjin Lv, Kevin P. Sullivan, Wesley O. Gordon, Alex Balboa, George W. Wagner, Djamaladdin G. Musaev, John Bacsa, Craig L. Hill*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)7403-7407
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number26
DOIs
Publication statusPublished - 20 Jun 2016

Keywords

  • catalysis
  • chemical warfare agents
  • decontamination
  • heteropolyniobates
  • hydrolysis

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