Niobium(V) saponite clay for the catalytic oxidative abatement of chemical warfare agents

Fabio Carniato, Chiara Bisio, Rinaldo Psaro, Leonardo Marchese, Matteo Guidotti
Angewandte Chemie 2014 September 15, 53 (38): 10095-8
A Nb(V)-containing saponite clay was designed to selectively transform toxic organosulfur chemical warfare agents (CWAs) under extremely mild conditions into nontoxic products with reduced environmental impact. Thanks to the insertion of Nb(V) sites within the saponite framework, a bifunctional catalyst with strong oxidizing and acid properties was obtained. Remarkable activity and high selectivity were observed for the oxidative abatement of (2-chloroethyl)ethyl sulfide (CEES), a simulant of sulfur mustard, at room temperature with aqueous hydrogen peroxide. This performance was significantly better compared to a conventional commercial decontamination powder.

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