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摘要: 利用合成的六种吡啶类离子液体，N-丁基吡啶硝酸盐离子液体([BPy]NO3)，N-乙基吡啶硝酸盐离子液体([EPy]NO3)，N-丁基吡啶四氟硼酸盐离子液体([BPy]BF4)，N-乙基吡啶四氟硼酸盐离子液体([EPy]BF4)、N-乙基吡啶乙酸盐([EPy]Ac)、N-丁基吡啶乙酸盐([BPy]Ac)，进行了汽油萃取脱硫的应用研究。结果表明，[BPy]BF4的脱硫效果最好，[EPy]BF4的脱硫效果最差。[BPy]BF4对模型化合物单程脱硫率达到45.5％，可以有效地脱除汽油中的含硫化合物，使用过的离子液体可以通过真空加热或用四氯化碳反萃取再生。Abstract: Six N-alkylpyridiniumbased ionic liquids, N-butylpyridinium nitrate ([BPy]NO3), N-ethylpyridinium nitrate ([EPy]NO3), N-butylpyridinium tetrafluoroborate ([BPy]BF4), N-ethylpyridinium tetrafluoroborate ([EPy]BF4), N-ethylpyridinium acetate([EPy]Ac), N-butylpyridinium acetate([BPy]Ac) were prepared and tested in the extraction desulfurization of gasoline. It is found that [BPy]BF4 has the best effect on the selective removal of sulfurcontaining compounds from gasoline at room temperature among these ionic liquids. The extraction rate of [BPy]BF4 is 45.5%. The desulfurization effect of [EPy]BF is the lowest. The used ionic liquids can be regenerated by rotary evaporation or re-extraction using tetrachloromethane.
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Key words:
- ionic liquids /
- model gasoline /
- desulfurization /
- extraction
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