Research on the effects of tungstate and carbonate salts in green decontamination on the conversion process of 2-chloroethyl phenyl sulfide

Abstract

This article introduces the initial research results on the catalytic role of tungstate and carbonate in green decontamination (TDX-2) on the conversion process of 2-chloroethyl phenyl sulfide (CEPS is a simulant of the yperite). The result shows that, under the conditions of investigation, the catalytic ability of K₂WO₄ is about 240 times greater than that of K₂CO₃. In TDX-2, K₂WO₄ catalytically reacts about 7 times faster than K₂CO₃. The K₂WO₄ catalyst in the decontamination mixture is stable, highly durable, and less likely to cause unwanted H₂O₂ decomposition. After 18 hours of mixing, it still achieves a conversion efficiency of over 95% after 15 minutes of reaction with CEPS, while to achieve equivalent conversion efficiency, the durability of the solution with K₂CO₃ catalyst is only less than 2 hours. At the same time, K₂WO₄ limits the tendency to over-oxidize sulfide to sulfone compared to K₂CO₃.