Registration Number
0223U001894,
0118U003621
, R & D reports
Title
Hybrid catalytic systems based on HON-containing organocatalysts and metal nanoparticles for oxidation processes with green oxidants O2 and H2O2 of organic and natural substrates.
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Head
Opeida Yosyp O,
Registration Date
05-02-2023
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 research comprises catalytic systems based on metals (Fe, Mn, Co, Ni, Cu, Ag), their nanoparticles, oxides, alloys, and N-hydroxyimides for the oxidation of organic substrates. The subject of research is catalytic oxidation of organic substances by oxygen and hydrogen peroxide, binary systems composed of N-hydroxyphthalimide with a heterogeneous catalyst. The aim of the work is the development of new catalytic systems based on metals, their oxides and N-hydroxyimides for oxidation of organic substrates obtained from renewable and fossil raw materials. The research methods are kinetic; quantum chemical; atomic absorption, UV-Vis, NMR, IR spectroscopy; volumetry; gas and liquid chromatography. Catalytic activity of the HON-containing organocatalysts and metal salts (Fe, Mn, Co, Cu) was studied using oxidation of organic substrates. The influence of the N-hydroxyimide structure on its activity was shown. Magnetoseparable catalysts of bimetallic Ag@Ni nanoparticles and ferrite-based catalysts were investigated for the oxidation of various substrates. The efficiency of their catalytic action, as well as the ease of separation from the reaction mixture using a magnet, are shown. A comparative study of catalytic activity in oxidation processes and biological action of N-hydroxyimides based on their structure was performed. The mechanism of catalytic action of N-hydroxyimides during oxidation with molecular oxygen and hydrogen peroxide was studied. The great role of hydroperoxyl radicals in the oxidation of systems where one of the components is alcohol is shown, which significantly affects the efficiency of catalysis by hydroxyphthalimides. The inhibitory effect of HOOH in the radical chain process of oxidation by molecular oxygen was found experimentally and theoretically substantiated. The effect of NHPI in systems where the oxidant is hydrogen peroxide was studied.
Product Description
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Bazyliak Liliia I.
Kytsya Andriy R.
Novokhatko Anastasia O
Opeida Lubov I
Khavunko Oxana Yu.
Sheparovych Roman B
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2023-02-05
