New glycerol-based deep eutectic solvents as green extragents for diesel fuel
DOI:
https://doi.org/10.15328/cb2025_64Keywords:
deep eutectic solvents, glycerol, diesel, gas chromatography, ASTM standards, SDG 6, SDG 13Abstract
The dearomatization, denitrification and oxidative desulfurization of commercial diesel fuels were investigated using glycerol-based deep eutectic solvents. The optimal conditions of liquid-liquid extraction processes were chosen as room and 90°C temperatures and 3 hours of mixing time. Ammonium chloride-glycerol, triethylammonium acetate-glycerol and choline chloride-glycerol were used as extractive solvents in the purification processes. Diesel-Deep eutectic solvents (Diesel-DESs) were taken as the volume ratios of 1:1 for the dearomatization and denitrification processes. The volume ratios of Diesel-DESs-H2O2 were 1:1:2 for the oxidative desulfurization. H2O2 was selected as the oxidative agent of oxidation desulfurization. Before and after separation processes, the exploitation properties were studied by ASTM standards and compared to commercial diesel. All separation processes were controlled by gas chromatography and 1H NMR methods. Based on the NMR analysis, NH4Cl/6Glycerol with H₂O₂ and ChCl/6Glycerol were the most effective extractive agents for purified diesel samples, from the alkyl aromatic, naphthenic, and heteroatomic compounds.
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