chemicallytechFine Chemical TechnologiesТонкие химические технологии2410-65932686-7575MIREA – Russian Technological University (RTU MIREA).10.32362/2410-6593-2025-20-3-215-222ZKHQPMchemicallytech-2259Research ArticleCHEMISTRY AND TECHNOLOGY OF ORGANIC SUBSTANCESХИМИЯ И ТЕХНОЛОГИЯ ОРГАНИЧЕСКИХ ВЕЩЕСТВEvaluation of the catalytic effect of potassium tungstate in green decontamination for detoxification of 2-chloroethyl phenylsulfide (2-CEPS)Оценка каталитического эффекта вольфрамата калия в экологически безопасной детоксикации 2-хлорэтилфенилсульфида (2-CEPS)https://orcid.org/0009-0007-5278-0538BinhVu ThanhBinhVu Thanh

Vu Thanh Binh, Postgraduate Student

17, Hoang Sam str., Cau Giay district; Ханой 

Vu Thanh Binh, Postgraduate Student

17 Hoang Sam, Cau Giay District; Hanoi

vuthanhbinh0979@gmail.comhttps://orcid.org/0000-0001-8322-5202HoaNguyen ThanhHoaNguyen Thanh

Nguyen Thanh Hoa, Dr. Sci. (Environm. Eng.)

Faculty of Chemistry and Environment

175, Tay Son str., Dong Da district; Ханой

Scopus Author ID 57204931100

Nguyen Thanh Hoa, Dr. Sci. (Environm. Eng.)

Faculty of Chemistry and Environment

175 Tay Son, Dong Da District; Hanoi

Scopus Author ID 57204931100

nthoa@tlu.edu.vnKhueDo NgocKhueDo Ngoc

Do Ngoc Khue, Dr. Sci. (Chem.), Professor

17, Hoang Sam str., Cau Giay district; Ханой

Do Ngoc Khue, Dr. Sci. (Chem.), Professor

17 Hoang Sam, Cau Giay District; Hanoi

dnkhue@gmail.comHungNguyen KhanhHungNguyen Khanh

Nguyen Khanh Hung, Dr. Sci. (Chem. Eng.)

Km8+500, Thang Long boulevard, An Khanh district; Ханой

Nguyen Khanh Hung, Dr. Sci. (Chem. Eng.)

Km8+500, Thang Long boulevard, An Khanh district; Hanoi

khanhhungctet@gmail.comHungDao DuyHungDao Duy

Dao Duy Hung, Dr. Sci. (Chem. Eng.)

Km8+500, Thang Long boulevard, An Khanh district; Ханой

Dao Duy Hung, Dr. Sci. (Chem. Eng.)

Km8+500, Thang Long boulevard, An Khanh district; Hanoi

daoduyhung179@gmail.comИнститут Новой Технологии, Академия Военной Науки и ТехнологииВьетнамNew Technology Institute, Academy of Military Science and TechnologyViet NamУниверситет Туи ЛойВьетнамThuyloi UniversityViet NamInstitute of Military Chemistry and Environment, Химический КорпусВьетнамChemical CorpsViet Nam202516072025203215222Copyright © Binh V.T., Hoa N.T., Khue D.N., Hung N.K., Hung D.D., 20252025Binh V.T., Hoa N.T., Khue D.N., Hung N.K., Hung D.D.Binh V.T., Hoa N.T., Khue D.N., Hung N.K., Hung D.D.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.finechem-mirea.ru/jour/article/view/2259   Objectives

   Objectives. 2-Chloroethyl phenylsulfide (2-CEPS) is a relevant simulant of chemical warfare sulfur mustard gas (yperit) as part of an environmentally-friendly decontamination processes. This study presents the initial results of research the catalytic ability of tungstate in the conversion process of 2-CEPS.

   Methods

   Methods. The decontamination system employed in this study comprised hydrogen peroxide (H2O2), potassium tungstate acting as a metal transition salt catalyst, a surfactant, and organic solvents. The research investigated the impact of K2WO4 concentration on the conversion efficiency and rate of the target compound. As well as additionally exploring the influence of the substrate-to-catalyst ratio on the reaction pathway, the study evaluated the stability of the detoxifying mixture.

   Results

   Results. Increasing the concentration of K2WO4 is shown to lead to an increase in the efficiency and conversion rate of 2-CEPS. As well as demonstrating stability and durability, the catalyst did not cause unwanted H2O2 breakdown. After 18 h of mixing, the conversion retained efficiency above 95 % within 15 min of the reaction. The degradation kinetics follow a pseudo-first-order model, indicating that the reaction rate is directly influenced by the K2WO4 concentration. In addition to enhancing the oxidative capacity of the solution, increased tungstate concentration promotes the formation of undesirable sulfone byproducts.

   Conclusions

   Conclusions. The study investigated the catalytic activity of tungstate within an eco-friendly solution formulated to degrade 2-CEPS. Our findings demonstrate a strong correlation between the concentration of potassium tungstate (K2WO4) and the rate of 2-CEPS degradation. A key advantage of tungstate is its exceptional stability and durability as a catalyst. Efficient decontamination is ensured thanks to its minimal interference with the stability of hydrogen peroxide (H2O2).

   Цели

   Цели. Представлены первые результаты изучения каталитической способности вольфрамата в процессе превращения 2-хлор этилфенилсульфида (2-CEPS) — аналога иприта, сернистого иприта — в рамках экологически безопасных методов дезактивации.

   Методы

   Методы. Система дезактивации включала пероксид водорода (H2O2), вольфрамат калия (катализатор на основе соли переходного металла), поверхностно-активное вещество и органические растворители. Исследовалось влияние концентрации K2WO4 на эффективность и скорость превращения целевого соединения. Дополнительно изучалось соотношение субстрата и катализатора, а также стабильность детоксицирующей смеси.

   Результаты

   Результаты. Показано, что увеличение концентрации K2WO4 приводит к росту эффективности и скорости превращения 2-CEPS. Катализатор продемонстрировал стабильность и долговечность, не вызывая нежелательного разложения H2O2. После 18 ч перемешивания степень конверсии сохранялась выше 95 % в течение 15 мин реакции. Кинетика деградации соответствует модели псевдопервого порядка, что указывает на прямую зависимость скорости реакции от концентрации K2WO4, однако повышение концентрации вольфрамата способствует образованию нежелательных сульфоновых побочных продуктов.

   Выводы

   Выводы. Исследована каталитическая активность вольфрамата в экологически безопасном растворе, разработанном для деградации 2-CEPS. Установлена четкая зависимость между концентрацией K2WO4 и скоростью разложения 2-CEPS. Ключевое преимущество вольфрамата — его исключительная стабильность и долговечность в качестве катализатора, а также минимальное влияние на стабильность H2O2, что обеспечивает эффективную дезактивацию.

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The authors declare that there are no conflicts of interest present.