Efficient heterogeneous and environmentally friendly degradation of nerve agents on a tungsten-based POM

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• 作者：Dana M. Mizrahi ; Sigal Saphier ; Ishay Columbus
• 关键词：Polyoxometalate ; Decontamination ; VX ; Sarin ; Mustard gas
• 刊名：Journal of Hazardous Materials
• 出版年：2010
• 出版时间：15 July 2010
• 年：2010
• 卷：179
• 期：1-3
• 页码：495-499
• 全文大小：627 K

文摘

Common (chemical warfare agent) CWA decontaminants exhibit harsh and corrosive characteristics, and are harmful to the environment. In the course of our quest for active sorbents as efficient decontaminants, Keggin-type polyoxometalate (POM) (NH₄)₃PW₁₂O₄₀ was tested for oxidative degradation of CWAs. Although oxidation did not take place, sarin (GB) and VX were smoothly decontaminated to non-toxic products within 1 and 10 days, respectively. Degradation was carried out directly on the powder, eliminating the need for solvents. Mustard gas (HD), whose degradation is highly dependent on oxidation, was not decontaminated by this POM. Solid state MAS NMR (³¹P and ¹³C) was utilized both for POM characterization and for decontamination studies monitoring.