Photocatalytic Oxidation of Tabun Simulant-Diethyl Cyanophosphate: FTIR in Situ Investigation Full article
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Environmental Science and Technology
ISSN: 0013-936X , E-ISSN: 1520-5851 |
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| Output data | Year: 2008, Volume: 42, Number: 12, Pages: 4350-4355 Pages count : 6 DOI: 10.1021/es7021818 | ||
| Tags | Chemical oxygen demand; Fourier transform infrared spectroscopy; Gases; Oxidation | ||
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Abstract:
Gas phase photocatalytic oxidation of diethyl cyanophosphate vapor in a static reactor using TiO2 and modified TiO2 as the photocatalyst was studied with the FTIR in situ method. ThetransitionmetalsPt,Au,andAgwereusedforTiO2 modification by the chemical and photochemical deposition methods as well as the mechanical mixture of TiO2 with manganese oxide to improve its adsorption and catalytic activity. Photocatalytic oxidation of diethyl cyanophosphate in a static reactor results in its complete mineralization with carbon dioxide, phosphoric and nitric acids, and water as the major final products. HCN was demonstrated to be the only toxic gaseous intermediate of diethyl cyanophosphate photocatalytic oxidation, formed as a result of diethyl cyanophosphate hydrolysis. Diethylphosphateand acetic and formic acids were registered as the surface intermediates. It was found that cyanhydric acid is oxidized slowly with the use of unmodified TiO2. The formation of surface cyanide complexes with Ag and Au ions could be responsible for the fast removal of HCN from the gas phase and its further photooxidation in the case of using TiO2 with deposited Au and Ag.
Cite:
Kolinko P.A.
, Kozlov D.V.
Photocatalytic Oxidation of Tabun Simulant-Diethyl Cyanophosphate: FTIR in Situ Investigation
Environmental Science and Technology. 2008. V.42. N12. P.4350-4355. DOI: 10.1021/es7021818 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Photocatalytic Oxidation of Tabun Simulant-Diethyl Cyanophosphate: FTIR in Situ Investigation
Environmental Science and Technology. 2008. V.42. N12. P.4350-4355. DOI: 10.1021/es7021818 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Dates:
| Submitted: | Sep 16, 2007 |
| Accepted: | Mar 14, 2008 |
| Published online: | May 15, 2008 |
| Published print: | Jun 1, 2008 |
Identifiers:
| Web of science: | WOS:000256705600021 |
| Scopus: | 2-s2.0-45249109531 |
| Elibrary: | 13591132 |
| Chemical Abstracts: | 2008:588535 |
| Chemical Abstracts (print): | 149:85915 |
| PMID: | 18605554 |
| OpenAlex: | W2081784070 |