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Dimethyl chlorophosphate (DMCP) is a surrogate of G‐series organophosphate nerve agents. The destruction of DMCP over copper hydroxyl nitrate (CuON) and copper hydroxyl nitrate/graphite oxide composite (CuONGO) is studied. The extent of interactions between DMCP and the adsorbent surface is monitored by Fourier transform infrared spectroscopy in a total attenuated reflectance mode at several predetermined time exposures. Thermal analysis/mass spectrometry is also used to determine the reactive adsorption process. Here, a gradual replacement of NO3− groups by Cl− and/or CO3− indicating the mineralization of DMCP to form CuCl2 and CuCO3 is shown. Even though more DMCP is reactively adsorbed on CuON, its decomposition is faster on CuONGO. Detected NO2, which is formed as an intermediate, causes the conversion of an unevaporated DMCP liquid to H3PO4, as supported by MS results. This mineralization of DMCP happens via an indirect contact with the catalyst. Thus, CuON and CuONGO are considered as highly powerful media for the decontamination of chlorophosphate‐based nerve agents.
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Arcibar‐Orozco et al. (2015) studied this question.
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