首页|Removal of Nitrogen Compounds from Fuels by Deep Eutectic Solvent Based on 1-Butyl-3-Methylimidazolium Bromide and Dicarboxylic Acids
Removal of Nitrogen Compounds from Fuels by Deep Eutectic Solvent Based on 1-Butyl-3-Methylimidazolium Bromide and Dicarboxylic Acids
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1-Butyl-3-methylimidazolium bromide-based([Bmim]Br-based)deep eutectic solvents(DESs)can be used as effective extractants for removing nitrogen compounds from fuel oil.Among the DESs studied,the combination of[Bmim]Br and malonic acid(MA)in a 1:1 molar ratio demonstrated good performance for the removal of both basic and non-basic N compounds.The DES[Bmim]Br-MA exhibited extraction efficiencies of 98.4%for quinoline and 92.9%for indole after 30 min at 30℃with a DES/oil mass ratio of 1/7.Moreover,the extraction efficiencies remained high at 86.4%for quinoline and 85.9%for indole after recycling the DES four times..In addition,the DES[Bmim]Br-MA could effectively remove N compounds from Fushun shale diesel oil,with extraction efficiencies of 83.5%for total nitrogen and 89.9%for basic nitrogen at a DES/oil mass ratio of 1/1.
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