PEROXIDE AND AEROBIC DESULFURIZATION CATALYSTS BASED ON HYBRID PLASMA ELECTROLYTICALLY OXIDIZED LAYERS WITH PHOSPHORUS, TUNGSTEN AND IRON OXIDES

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Abstract

Catalytically active coatings on titanium were synthesized by plasma electrolytic oxidation (PEO) in aqueous electrolytes containing sodium phosphate and tungstate, as well as iron chelate complexes with EDTA. Analysis of EDX, XPS and XRD data allowed concluding that the PEO coatings contain titanium dioxide and amorphous tungstates and/or phosphates of iron. High phosphorus concentrations (up to 6 at. %) promoted amorphization. Testing the PEO catalysts showed their activity in oxidative desulfurization (ODS) of thiophene and dibenzothiophene with hydrogen peroxide and air oxygen.

About the authors

I. G. Tarkhanova

Lomonosov Moscow State University. M. V. Lomonosov Moscow State University

Email: itar_msu@mail.ru
Department of Chemistry Moscow, Russia

I. V. Lukiyanchuk

Institute of Chemistry, Far East Branch, Russian Academy of Sciences

Vladivostok, Russia

E. A. Eseva

Lomonosov Moscow State University. M. V. Lomonosov Moscow State University

Department of Chemistry Moscow, Russia

M. S. Vasilyeva

Institute of Chemistry, Far East Branch, Russian Academy of Sciences; Far Eastern Federal University

Vladivostok, Russia; Vladivostok, Russia

M. O. Lukashov

Lomonosov Moscow State University. M. V. Lomonosov Moscow State University

Department of Chemistry Moscow, Russia

V. V. Korochentsev

Institute of Chemistry, Far East Branch, Russian Academy of Sciences

Vladivostok, Russia

V. V. Tkachev

MSU-BIT University

Faculty of Material Science Shenzhen, China

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