Characterization Of The Zirconium Metal-Organic Framework (Mof) Uio-66-Nh(2)For The Decomposition Of Nerve Agents In Solid-State Conditions Using Phosphorus-31 Solid State-Magic Angle Spinning Nuclear Magnetic Resonance (P-31 Ss-Mas Nmr) And Gas Chromatography - Mass Spectrometry (Gc-Ms)

UiO-66-NH(2)was synthesizedin situand analyzed as a reactive sorbent for nerve agent removal in the solid-state environment. UiO-66-NH(2)had the smallest pore sizes, centered at 7 angstrom with added pores at 13 and 15 angstrom, indicating a hierarchically microporous structure. Thein situreaction was examined using phosphorus-31 solid state-magic angle spinning nuclear magnetic resonance (P-31 SS-MAS NMR) and further confirmed by gas chromatography - mass spectrometry (GC-MS). The results show that the nerve agents were decomposed via hydrolysis by UiO-66-NH(2)and the overall rates were reduced for solid-phase reactions. Of the characterized componentsO-pinacolyl methylphosphonofluoridate (GD),N, N-dimethylphosphoramidocyanidate (GA), andO-ethylS-diisopropylaminomethyl methylphosphonothioate (VX), GD was decomposed faster than GA and VX by UiO-66-NH2. Specifically, GD was decomposed toO-pinacolyl-methylphosphonic acid (PMPA) with a half-life of approximately 430 min in the presence of neat UiO-66-NH2. However, GA and VX were slowly hydrolyzed, forming reaction products such as ethylphosphate and dimethylphosphoramidic (DMPA) acid monoethylester from GA, and ethyl methylphosphonic acid (EMPA), methylphosphonic acid (MPA), and 2-(Diisopropylamino)ethyldisulfide (DES)(2)from VX, respectively. This work describes the processes involved for these materials when they are deployed to protect against a nerve agent release, implying the practical application of UiO-66-NH(2)for a broad range of filtration applications in the field.