Supported Ionic Liquid Catalysts for the Oxidation of S- and N-Containing Compounds—The Effect of Bronsted Sites and Heteropolyacid Concentration

In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids was obtained. These compositions were characterized by various physicochemical methods and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. An increase in the amoun...

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Bibliographic Details
Published in:Catalysts 2023-04, Vol.13 (4), p.664
Main Authors: Gorbunov, Vladislav, Buryak, Aleksey, Oskolok, Kirill, Popov, Andrey G., Tarkhanova, Irina
Format: Article
Language:English
Subjects:
Acids
Adsorbents
Adsorption
Catalysts
Catalytic oxidation
Chemical reactions
denitrogenation
desulfurization
Energy minerals
Fossil fuels
Hydrogen peroxide
Hydrogenation
Ionic liquids
Ions
Molybdenum
Nitrogen
Oxidation
polyoxometalates
Pyridine
Sulfur
Sulfur compounds
Sulfur removal
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Summary:In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids was obtained. These compositions were characterized by various physicochemical methods and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. An increase in the amount of heteropolyacid (HPA) leads to a non-linear change in acidity, and the degree of removal of sulfur-containing compounds correlates with the concentration of Bronsted acid sites on the surface. On the contrary, the degree of pyridine removal is determined primarily by the content of heteropolyacids in the catalyst.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal13040664