Deep Oxidative Desulfurization of Dibenzothiophene in Simulated Diesel with Tungstate and H2O2 in Ionic Liquids

作者：Chao, Y.; Li, H.^*; Zhu, W.; Zhu, G.; Yan, Y.

来源：Petroleum Science and Technology, 2010, 28(12): 1242-1249.

DOI：10.1080/10916460903030441

• catalytic oxidation
• desulfurization
• extraction
• hydrogen peroxide
• ionic liquids

A green extraction and catalytic oxidative desulfurization (ECODS) system composed of simple tungsten-containing catalyst, 30 wt% H2O2, and ionic liquids was discovered suitable for the deep removal of dibenzothiophene (DBT) in simulated diesel. In the case of the system comprising Na2WO4 center dot 2H2O, 30 wt% H2O2 and 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), the removal of DBT could reach 99.7% at 60 degrees C for 3 hr, which was superior to mere solvent extraction with ionic liquid or catalytic oxidation without ionic liquid. This desulfurization system could be recycled five times with a small decrease in activity.

• 出版日期2010
• 单位江苏大学