Removal of Sulphur-Containing Compounds from the Diesel Fraction by Extraction Systems Based on Coordinating Polar Solvents and Metal Salts
N. S. KOBOTAEVA1, T. S. SKOROKHODOVA1, O. S. ANDRIENKO2
1Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
2Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
Keywords: Extractive isolation of sulphur-containing compounds, polar organic solvents, metal salts
Pages: 187-193
Abstract
The process of removing sulphur-containing compounds from the diesel fraction has been carried out and investigated. The systems based on coordinating polar solvents (DMF and DMSO) and metal salts (CuCl2, CoCl2, MnCl2, Mn(TFA)2, Cu(TFA)2) were used as extractants. It has been established that the presence of metal salts in extraction systems increases the degree of removal of sulphur-containing compounds from the diesel fraction from 11 to 49 % and reduces the content of polycyclic aromatic hydrocarbons by 33 %. It is assumed that the addition of metal salts to the solvent enhances its acceptor properties, which is manifested in the enhancement of its extractability.
DOI: 10.15372/CSD2023454
EDN: LLFEBA
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