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Ti/TiO2/NiWO4 + WO3 composites for oxidative desulfurization and denitrogenationстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
- Авторы: Lukiyanchuk I.V., Vasilyeva M.S., Ustinov A.Yu, Bryzhin A.A., Tarkhanova I.G.
- Журнал: Surface and Coatings Technology
- Том: 434
- Год издания: 2022
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 128200
- DOI: 10.1016/j.surfcoat.2022.128200
- Аннотация: The catalytic properties of Ti/TiO2/NiWO4 + WO3 composites fabricated by plasma electrolytic oxidation (PEO)of titanium in a solution containing 0.1 mol/L Na2WO4 + 0.1 mol/L CH3COOH + 0.05 mol/L Ni(CH3COO)2 werestudied in model reactions of peroxide oxidation of thiophene (T), dibenzothiophene (DBT), methylphenylsulfide (MPhS), and pyridine (Py). This paper demonstrates for the first time that such composites are promisingfor catalytic oxidation of both S-containing and N-containing petroleum compounds. By the example of the re-action of dibenzothiophene oxidation, the optimal reaction temperature (60 ◦C) and the content of hydrogenperoxide in the reaction mixture were established, and the efficiencies of the Ti/TiO2/NiWO4 + WO3 and Ti/TiO2/WO3 composites were compared to show the role of nickel in increasing their activity and stability. It wasfound that, with respect to organosulfur substrates, the activity of the Ti/TiO2/NiWO4 + WO3 catalyst decreasesin the series: methylphenyl sulfide > dibenzothiophene > thiophene. The changes in surface morphology andelemental composition of composites after catalytic tests have been evaluated using SEM, EDS and XPS. It hasbeen established that the use of the Ti/TiO2/NiWO4 + WO3 catalyst makes it possible to achieve a deep degree ofdesulfurization of the diesel fraction of petroleum feedstock (>90%)
- Добавил в систему: Тарханова Ирина Геннадиевна