Oxidative Desulfurization of Fuels Catalyzed by V2O5 in Ionic Liquids at Room Temperature

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• 作者：Dan Xu ; Wenshuai Zhu ; Huaming Li ; Jingtong Zhang ; Fang Zou ; Hua Shi ; Yongsheng Yan
• 刊名：Energy & Fuels
• 出版年：2009
• 出版时间：December 17, 2009
• 年：2009
• 卷：23
• 期：12
• 页码：5929-5933
• 全文大小：725K
• 年卷期：v.23,no.12(December 17, 2009)
• ISSN：1520-5029

文摘

An extraction and catalytic oxidation desulfurization (ECODS) system composed of V₂O₅, 30 wt % H₂O₂ and 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF₄) as the basic experiment was used for the removal of DBT from the model oil at moderate temperature (30 °C). In the reaction process, V₂O₅ was oxidized by H₂O₂ into peroxovanadium compounds. Meanwhile, the sulfur-containing compounds, such as benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT), were extracted into ionic liquid (IL) from the model oil and oxidized into their corresponding sulfones by peroxovanadium compounds. The reactivity of sulfur-containing compounds in the ECODS followed this order: DBT > BT > 4,6-DMDBT. In the case of ECODS, the sulfur removal of DBT can reach 98.7%, which was superior to that of the simple extraction with IL (16.5%) or the catalytic oxidation (2.8%). This ECODS system could be recycled seven times without a significant decrease in activity.