Issue |
E3S Web Conf.
Volume 267, 2021
7th International Conference on Energy Science and Chemical Engineering (ICESCE 2021)
|
|
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Article Number | 02061 | |
Number of page(s) | 5 | |
Section | Environmental Chemistry Research and Chemical Preparation Process | |
DOI | https://doi.org/10.1051/e3sconf/202126702061 | |
Published online | 04 June 2021 |
Study on detoxification property of alkaline-modified MoO42--H2O2 decontaminants against PhSMe under subzero environment
Institute of Chemical Defence, Army, Beijing, 102205, China
* Corresponding author:
a zhuhyuse@163.com
b hongpeng_zhang@sina.com
The decontaminant activated by MoO42- (MoO42--H2O2) suitable for subzero environment shows strong oxidizing ability and weak nucleophilicity due to its acid. In this paper, in order to improve nucleophilicity and retain oxidation of MoO42--H2O2 as far as possible, NH3 and NaOH were used as alkaline modifiers, and PhSMe was used as a simulant of HD to study the oxidation rate and products of sulfides by alkaline-modified MoO42--H2O2 below zero. Results showed that the reaction rate constants decreased with the increase of pH in both NH3 and NaOH modified MoO42--H2O2 at -20°C, and the relative ratio of sulfone to sulfoxide increased especially at pH>9. The reaction activation energy Ea of PhSMe oxidation in the alkaline-modified MoO42--H2O2 decontaminants was lower than that in the MoO42--H2O2 decontaminant, which indicated that the sensitivity of the oxidation reaction rate to temperature in MoO42--H2O2 was reduced after modification.
© The Authors, published by EDP Sciences, 2021
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