Oxidative desulfurization of fuel oil by pyridinium-based ionic liquids.

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Di-shun ZhaoErhong Duan

Abstract

In this work, an N-butyl-pyridinium-based ionic liquid [BPy]BF(4) was prepared. The effect of extraction desulfurization on model oil with thiophene and dibenzothiophene (DBT) was investigated. Ionic liquids and hydrogen peroxide (30%) were tested in extraction-oxidation desulfurization of model oil. The results show that the ionic liquid [BPy]BF(4) has a better desulfurization effect. The best technological conditions are: V(IL)/V(Oil) /V(H(2)O(2)) = 1:1:0.4, temperature 55 degrees C, the time 30 min. The ratio of desulfurization to thiophene and DBT reached 78.5% and 84.3% respectively, which is much higher than extraction desulfurization with simple ionic liquids. Under these conditions, the effect of desulfurization on gasoline was also investigated. The used ionic liquids can be recycled up to four times after regeneration.

Citations

Nov 29, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Fengli Yu, Rui Wang
Sep 1, 2015·Frontiers of Chemical Science and Engineering·Hua Zhao, Gary A Baker

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