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Registration Number

0224U001296, 0123U102170 , R & D reports

Title

Development of new functional nanostructured membranes and catalysts for oxidation of C-H-, H(HO)C-containing compounds of natural and synthetic origins

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Head

Sheparovych Roman B., Кандидат хімічних наук

Registration Date

19-01-2024

Organization

Department of Physical Chemistry of Combustible Minerals of the Institute of Physical and Organic Chemistry and Coal Chemistry. L.M. Litvinenko of the National Academy of Sciences of Ukraine

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The object of the research is catalytic system of transition metals (Mn, V, Cu) with N-hydroxyimides for oxidation of organic substrates, polymer hybrid membranes based on acrylic monomers, magnetically separable nanostructured core-shell type CuO catalyst. The research subject is catalytic oxidation of organic substances by oxygen using organocatalyst N-hydroxyphthalimide and a heterogeneous catalyst; synthesis and investigation of polymer membranes with proton-conducting and ion-exchange properties; catalytic properties of nanocomposites in the Fenton system; influence of temperature and pH of the environment on the oxidation efficiency. This work aims at the development of new catalytic systems based on metal oxides and N-hydroxyimides for the oxidation of organic substrates by oxygen via C-H bonds; synthesis of amphiphilic polymer hybrid membranes with high proton-conducting and ion-exchange properties; creation of magnetically separable CuO Fenton catalysts of core-shell type. The mechanism of catalysis by N-hydroxyimides during oxidation by O2 was investigated. We showed the essential role of the reaction between phthalimide-N-oxyl radicals and hydroperoxide formed in the reaction. We obtained the general kinetic equation of catalysis that takes into account this reaction. A mechanism of homogeneous-heterogeneous catalysis was proposed. Сrosslinked polymer membranes were synthesized via UV-initiated radical copolymerization of acrylic monomers: acrylonitrile, acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid with crosslinker N,N'-methylene (bis)acrylamide. The analysis of physico-chemical properties proved that these membranes can be used in low-temperature solid-state fuel cells. The catalytic activity of the heterogeneous nanostructured catalyst SiO2/CoFe2O4/SiO2/CuO in the Fenton system was investigated and the effect of medium pH and temperature on the oxidation efficiency was determined. Catalyst can be used for fine purification of wastewater.

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Yevchuk Iryna Yu.
Demchyna Oksana I.
Zhyhailo Mariia
Zaborovskiy Andriy B
Makido Olena Yu.
Maksym Dariya S
Musiy Rostyslav
Novokhatko Anastasia O
Opeyda Yosyp О.
Khavunko Oxana Yu.
Khovanets Halyna I.