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- W2073337136 abstract "Inexpensive N-methyl-pyrrolidone (NMP)-based ionic liquids (ILs) are synthesized by coordinating N-methyl-pyrrolidone with anhydrous FeCl3 or ZnCl2. The introduction of metal chlorides lowers the solubility of NMP for actual diesel. The obtained C5H9NO·0.3FeCl3 IL shows remarkable extraction ability for dibenzothiophene (DBT) with Nernst partition coefficients (kN) above 7.5, which can be attributed to its low viscosity and bifunctional extractive groups of five-membered ring of NMP and unoccupied orbitals of Fe ion. The oxidative desulfurization of DBT using H2O2 as oxidant and ILs as extractants are investigated. The scavenger experiments and electron paramagnetic resonance (EPR) measurement verify the active species is hydroxyl radical (OH) responsible for the oxidation of DBT. FeCl3-based ILs show much better effects in catalyzing H2O2 to generate OH than ZnCl2-based ILs. The process and mechanism for extraction and catalytic oxidation of DBT in an oil–ionic liquid–H2O2 system are proposed. The C5H9NO·0.3FeCl3 IL shows excellent recycling performance. After six-run experiment, there is only little loss in activity, which can be ascribed to the high solubility (18,190 ppm) of dibenzothiophene-sulfone (DBTO2), the main oxidation product of DBT, in the IL." @default.
- W2073337136 created "2016-06-24" @default.
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- W2073337136 date "2015-08-01" @default.
- W2073337136 modified "2023-10-09" @default.
- W2073337136 title "An inexpensive N-methyl-2-pyrrolidone-based ionic liquid as efficient extractant and catalyst for desulfurization of dibenzothiophene" @default.
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- W2073337136 doi "https://doi.org/10.1016/j.cej.2015.04.027" @default.
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