有机磷酸酯在微孔和介孔 NaX 沸石中的吸附及随后的化学变化。
Adsorption of organophosphates into microporous and mesoporous NaX zeolites and subsequent chemistry.
机构信息
Department of Chemistry, Binghamton University, State University of New York, Vestal Parkway East, Binghamton, New York 13902-6000, United States.
出版信息
Environ Sci Technol. 2011 Apr 1;45(7):3000-5. doi: 10.1021/es1030678. Epub 2011 Mar 1.
Due to the neurotoxicity of organophosphate (OP) pesticides and nerve agents synthesized as military or terror agents, their safe destruction and disposal is of considerable current importance. A representative OP, trimethyl phosphate (TMP), was adsorbed onto NaX zeolite, two mesoporous modifications, and a low-silica X zeolite. The nucleophilic chemical reactions of TMP with the zeolites were investigated by solid-state 13C and 31P nuclear magnetic resonance (NMR) and the solvent extracts by 1H, 13C, and 31P NMR. Nucleophilic substitution and subsequent hydrolysis reaction schemes are proposed. All of the zeolites have similar TMP decomposition yields, supporting the hypothesis that slow or incomplete diffusion of TMP in the microporous zeolite regions limits TMP decomposition.
由于有机磷（OP）农药和神经毒剂的神经毒性，这些物质被合成作为军用或恐怖制剂，因此安全地销毁和处理它们具有相当大的现实意义。本文选择三甲基磷酸酯（TMP）作为一种典型的 OP，将其吸附到 NaX 沸石、两种介孔改性沸石和低硅 X 沸石上。通过固态 13C 和 31P 核磁共振（NMR）研究了 TMP 与沸石的亲核化学反应，并通过 1H、13C 和 31P NMR 研究了溶剂提取物。提出了亲核取代和随后水解反应方案。所有沸石的 TMP 分解产率都相似，这支持了这样一种假设，即在微孔沸石区域中 TMP 的缓慢或不完全扩散限制了 TMP 的分解。
Zotero 插件