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Study on the Extraction of Phenolic Compounds from Model Oil by Using Ionic Liquid

This study proposed green ionic liquids (ILs) as solvent to extract phenolic compounds from model oil. The effects of reaction time (0-80 min), reaction temperature (10-60 °C), and phase volume ratio of BmimBF4 / phenol were investigated. The phenolic compounds existed in the lower layer were separated from the oil products, and analyzed by Liquid Chromatography; the oleic layer was analyzed by gas chromatography. The selectivity of two kinds of cresols was studied. A variety of ILs (BmimBF4, EmimBF4, BmimPF6, EmimNTf2) were used in this study and the effect of concentration difference between the o-cresol and m-cresol and the reaction temperature (10-60 °C) were explored.