Extractive-oxidative removals of dibenzothiophene and quinoline using vanadium substituted Dawson emulsion catalyst and ionic liquid based solvents

Extractivecatalytic oxidative desulfurization (ECODS) of model diesel using vanadium substituted Dawson-type emulsion catalyst has been investigated for the first time. At different operational conditions, ECODS was studied using selected solvents and [cetrimonium](11)P2W13V5O62 by means of Taguchi methods Under the optimized conditions (ionic liquids/oil volume ratio 1:8, 7.5 g/L, catalyst, O/S mole ratio 8, T= 70 degrees C after 45 min) 94% of sulfur and 100% of quinoline were removed. It is worth mentioning that in the presence of catalyst, solvent/oil volume decreases by 45% while sulfur removal increases by 54% compared to extraction desulfurization. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.