使用吡啶鎓离子液体对模拟燃料进行氧化萃取脱硫
Oxidative-Extractive Desulfurization of Model Fuels Using a Pyridinium Ionic Liquid.
作者信息
Mohumed Hanan, Rahman Shofiur, Imtiaz Syed Ahmad, Zhang Yan
机构信息
Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada.
Aramco Laboratory for Applied Sensing Research, King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia.
出版信息
ACS Omega. 2020 Apr 2;5(14):8023-8031. doi: 10.1021/acsomega.0c00096. eCollection 2020 Apr 14.
In this research, -butyl-pyridinium tetrafluoroborate ([BPy][BF]) ionic liquid (IL) was synthesized and characterized by H-NMR, C-NMR, and FT-IR spectroscopy. The synthesized ionic liquid was employed as an extractive agent for the removal of dibenzothiophene (DBT), a typical organosulfur pollutant from the organic medium. The effect of extractive desulfurization on a model fuel with DBT was investigated. The impact of operating parameters, i.e., temperature, extraction time, IL-to-fuel ratio, and fuel to oxidizing agent ratio, on the extraction efficiency was investigated. It was observed that the IL to model fuel ratio and the HO dosage have significant effects on desulfurization efficiency. An 89.49% DBT removal efficiency was obtained at a temperature of 30 °C after 35 min of extraction when the volume ratio of IL:model fuel:HO was 1:1:0.04. A density functional theory (DFT) study was carried out to investigate the interactions between the IL and the sulfur-containing compounds DBT/DBTO.
在本研究中，合成了四氟硼酸 - 丁基吡啶鎓（[BPy][BF₄]）离子液体（IL），并通过¹H-NMR、¹³C-NMR和傅里叶变换红外光谱（FT-IR）对其进行了表征。所合成的离子液体用作萃取剂，用于从有机介质中去除典型的有机硫污染物二苯并噻吩（DBT）。研究了萃取脱硫对含DBT的模拟燃料的影响。考察了操作参数，即温度、萃取时间、离子液体与燃料的比例以及燃料与氧化剂的比例对萃取效率的影响。结果表明，离子液体与模拟燃料的比例以及过氧化氢（HO）用量对脱硫效率有显著影响。当离子液体：模拟燃料：HO的体积比为1:1:0.04时，在30℃下萃取35分钟后，DBT的去除效率达到89.49%。进行了密度泛函理论（DFT）研究，以考察离子液体与含硫化合物DBT/DBTO之间的相互作用。
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