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Adsorption of Organophosphates into Microporous and Mesoporous NaX Zeolites and Subsequent Chemistry

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 modification...

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Published in:	Environmental science & technology 2011-04, Vol.45 (7), p.3000-3005
Main Authors:	Meng, Qingguo, Doetschman, David C, Rizos, Apostolos K, Lee, Min-Hong, Schulte, Jürgen T, Spyros, Apostolos, Kanyi, Charles W
Format:	Article
Language:	English
Subjects:	Adsorption Applied sciences Chemical reactions Diffusion Environmental Restoration and Remediation - methods Exact sciences and technology Global environmental pollution Magnetic Resonance Spectroscopy Neurotoxicity NMR Nuclear magnetic resonance Organophosphates - chemistry Pesticides Pollution Porosity Remediation and Control Technologies Silica Solvent extraction processes Water - chemistry Zeolites Zeolites - chemistry
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creator	Meng, Qingguo Doetschman, David C Rizos, Apostolos K Lee, Min-Hong Schulte, Jürgen T Spyros, Apostolos Kanyi, Charles W
description	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.
doi_str_mv	10.1021/es1030678
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source	American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects	Adsorption Applied sciences Chemical reactions Diffusion Environmental Restoration and Remediation - methods Exact sciences and technology Global environmental pollution Magnetic Resonance Spectroscopy Neurotoxicity NMR Nuclear magnetic resonance Organophosphates - chemistry Pesticides Pollution Porosity Remediation and Control Technologies Silica Solvent extraction processes Water - chemistry Zeolites Zeolites - chemistry
title	Adsorption of Organophosphates into Microporous and Mesoporous NaX Zeolites and Subsequent Chemistry
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