Extractive Desulfurization of Model Oil with Protic Ionic Liquids
Extractive Desulfurization of Model Oil with Protic Ionic Liquids
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DOI：
10.1021/acs.energyfuels.8b01936
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发表时间：
2018-07
期刊：
影响因子：
5.3
通讯作者：
Zhongqi Ren;Lu Wei;Zhiyong Zhou;Fan Zhang;Wei Liu
中科院分区：
文献类型：
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作者：
Zhongqi Ren;Lu Wei;Zhiyong Zhou;Fan Zhang;Wei Liu
由于对环境的关注，燃料的深度脱硫引起了全世界的关注。本研究合成了一系列具有不同酸性阴离子的新型质子离子液体（PILs），并对二苯并噻吩（DBT）、苯并噻吩（BT）和4,6-二甲基二苯并噻吩（DMDBT）在模型油中的萃取脱硫进行了研究。结果表明，DBT的萃取效率依次为[1,8-重氮比环[5.4.0]十一-7-烯]([DBU]) > [n -甲酰基啉]([NFM]) > [n -甲基咪唑]([HMIM]) > [n -甲基啉]([NMM])，而PIL阴离子为甲酸酯，不同阴离子的dbb基PIL在1个循环内对DBT和BT的去除率均在80%以上。3次循环后，[DBU]Pr对DBT （500 ~ 8.35 ppm）和BT （500 ~ 6.65 ppm）的萃取效率分别为98.33%和98.67%。5次循环后，DMDBT值为99.38% （500 ~ 3.10 ppm）。并研究了它们与3种芳香硫化合物的相互作用能。
Deep desulfurization of fuels has attracted worldwide attention as a result of environmental concerns. In this study, a new series of protic ionic liquids (PILs) with different acidic anions were synthesized and the extraction desulfurization of dibenzothiophene (DBT), benzothiophene (BT), and 4,6-dimethyldibenzothiophene (DMDBT) in model oil was carried out. The result showed that the extraction efficiency of DBT decreased in the order of [1,8-diazabicyclo[5.4.0]undec-7-ene] ([DBU]) > [N-formylmorpholine] ([NFM]) > [N-methylimidazole] ([HMIM]) > [N-methylmorpholine] ([NMM]) while the PIL anion was formate and DBU-based PILs with different anions could remove more than 80% DBT and BT in 1 cycle. The extraction efficiencies of [DBU]Pr were 98.33% for DBT (from 500 to 8.35 ppm) and 98.67% for BT (from 500 to 6.65 ppm) after 3 extraction cycles. The value for DMDBT was 99.38% (from 500 to 3.10 ppm) after 5 cycles. The interaction energies of these PILs with three aromatic sulfur compounds were also studied t...