Oxidative Desulfurization Process for Natural-Gas Condensate Based on Chemical Oxidation by Fe3O4@SiO2@Polyionene Core-Shell-Shell as a Novel Magnetite Nanoparticle Catalyst in the presence of K2S2O8 and H2O2

More and more rigid requirements for sulfur contents of motor fuels stimulate search for new ways of purification of hydrocarbon raw materials from sulfur compounds and modernization of existing desulfurization technologies. The main classes of gas and oil-sulfur compounds are thiols, dialkyl and cycloalkyl sulfides, alkyl aryl sulfides, as well as heteroaromatic compounds, specifically thiophene derivatives. The sulfur content of Ilam refinery′s natural gas condensate is very high (4150 ppm) and should be removed to reduce the sulfur content. Sulfur components are traditionally considered as undesirable contaminants of liquid hydrocarbon fuels. Sulfur oxidation appears a very promising route for obtaining ultralow-sulfur fuels requested worldwide by the new regulation mandates. This paper describes the oxidation of several kinds of S-containing molecules in Natural-Gas Condensate with hydrogen peroxide in a two liquid–liquid (L–L) phase system with Fe3O4@SiO2@polyionene/K2S2O8 Core-Shell-shell Magnetite Nanoparticle Catalyst under atmospheric pressure. The influence of the reaction temperature, the reaction time, the solvent, the volume ratio of the oxidant (H2O2) and the natural gas condensate were examined.