Oxidative Desulfurization of Fuel Oil by Pyridinium-Based Ionic Liquids

Molecules

Dishun Zhao¹  Yanan Wang¹ 

[1] ¹School of Chemical Engineering, Tianjin University, Tianjin, 300072, China ²School of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shi jiazhuang 050018, China ³School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

关键词: ionic liquids;    extraction-oxidation;    desulfurization;    pyridinium-based;   

DOI  :  10.3390/molecules14114351

来源: mdpi

【 摘 要 】

In this work, an N-butyl-pyridinium-based ionic liquid [BPy]BF₄ 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]BF₄ has a better desulfurization effect. The best technological conditions are: V(IL)/V(Oil) /V(H₂O₂) = 1:1:0.4, temperature 55 °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.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.