[HDMF]Cl-based DES as highly efficient extractants and catalysts for oxidative desulfurization of model oil

The intermediate di-[EMIM]Cl was synthesized from methyl imidazole and 1,4-dichlorobutane and then reacted with cobalt chloride at 105 °C to prepare a bi-[EMIM]CoCl3 ionic liquid catalyst. The di-[EMIM]CoCl3 catalyst coupled with oxone to remove sulfur-containing organics in octane. The di-[EMIM]CoCl3 catalyst was characterized by HNMR, FTIR, TG, and SEM–EDS. The dibenzothiophene (DBT) was dissolved in octane to prepare a model oil with an initial sulfur content of 500 ppm. Six grams of the model oil was added. The results showed that the optimal dosages of di-[EMIM]CoCl3, oxone (20 wt%), and [BMIM]BF4 extractant were 1 g, 2 g, and 2 g, respectively. At the optimum temperature of 45 °C, 100% of sulfur was removed after 40 min. After di-[EMIM]CoCl3 was recycled five times, the sulfur removal percentage remained above 91%. The sulfur removal percentages for different sulfur-containing organics followed the order of dibenzothiophene (DBT) > benzothiophene (BT) > 4,6-dimethyldibenzothiophene (4,6-DMDBT). The oxidation product was determined to be DBTO2 by GC–MS analysis, and the oxidation mechanism was discussed. The active oxygen atoms of oxone oxidized DBT to form DBTO, and then persulfate oxidized DBTO to DBTO2 via an identical oxidation mechanism.

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[HDMF]Cl-based DES as highly efficient extractants and catalysts for oxidative desulfurization of model oil

Abstract: [HDMF]Cl/XMCln exhibits high desulfurization activity. Meanwhile, the DES saving a lot of N,N-dimethylformamide protects environment.

Cited by 3 publications

References 44 publications

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Deep desulfurization of model oil using green amino acid ionic liquids combined with H₂O₂

Preparation of di-[EMIM]CoCl3 Ionic Liquid Catalyst and Coupling with Oxone for Desulfurization at Room Temperature

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[HDMF]Cl-based DES as highly efficient extractants and catalysts for oxidative desulfurization of model oil

Abstract: [HDMF]Cl/XMCln exhibits high desulfurization activity. Meanwhile, the DES saving a lot of N,N-dimethylformamide protects environment.

Cited by 3 publications

References 44 publications

Process intensification for sustainable extraction of metals from e-waste: challenges and opportunities

Process intensification for sustainable extraction of metals from e-waste: challenges and opportunities

Deep desulfurization of model oil using green amino acid ionic liquids combined with H2O2

Preparation of di-[EMIM]CoCl3 Ionic Liquid Catalyst and Coupling with Oxone for Desulfurization at Room Temperature

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Product

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Deep desulfurization of model oil using green amino acid ionic liquids combined with H₂O₂