Page 194 - 精细化工2020年第2期

·396· 精细化工 FINE CHEMICALS 第 37 卷

脱除率分别为 73.4%和 65.6%。与离子液体脱除模 Progresses in the denitrogenation of diesel oil by complexation[J].
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2.5 离子液体与甲苯-正十二烷溶液互溶度的测定
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会污染油品；同时油品在离子液体中有一定程度的 of polycondensed aromatics and nitrogen compounds on the
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取上层溶液，用硫氮测定仪测定有机相的总氮量，以 [7] Wang Yunfang (王云芳), Liu Wei (刘伟), Yuan Qian (袁倩), et al.
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此计算离子液体在甲苯-正十二烷溶液中的溶解度；
coking diesel[J]. Applied Chemical Industry (应用化工), 2011,
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定。测定结果表明：甲苯-正十二烷在 CH 3 CONH 2 - [8] Li Shaokai (李少凯), Li Linlun (李琳潞), Shen Jian (沈健), et al.
0.3ZnCl 2 中的溶解度为 0.0206 g/g，低于文献[10]报 Adsorption on removal of basic nitrogen in the shale diesel by USY
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度为 41 mg/kg，即 0.0041%，说明离子液体在溶液 streams by extraction with ionic liquids[J]. Green Chemistry, 2004,
中的溶解度很小，对于将来的应用还需要对离子液 7: 316-322.
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按照不同的物质的量比合成配位离子液体 Journal, 2014, 237: 286-290.
CH 3 CONH 2 -xZnCl 2 （x=0.3、0.4、0.5），脱除模拟 [12] Su Xiaolin (苏晓琳), Song Jun (宋军), Yang Jingyi (杨敬一), et al.
柴油中氮化物，CH 3 CONH 2 -0.3ZnCl 2 具有较好的脱 Extractive denitrification of coal tar diesel fraction using phosphate-
based alkylimidazolium ionic liquids[J]. Chemical Industry and
氮性能。在萃取时间 20 min、沉降时间 2 h、萃取温
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度 50 ℃的条件下，当剂油质量比为 1∶3 时，喹啉和 [13] Zhang L Z, Xu D M, Gao J, et al. Extraction and mechanism for the
吲哚脱除率分别为 96.8%、68.1%，继续增大剂油质 separation of neutral N-compounds from coal tar by ionic liquids[J].
量比至 1∶1，几乎检测不到喹啉模拟油的氮含量，而 Fuel, 2017, 194: 27-35.
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吲哚模拟油氮含量由初始的 500 μg/g 降至 62.5 μg/g，
nitrogen compounds found in diesel feed by 1-butyl-3-methyl-
该离子液体对碱性氮化物喹啉较高的脱除率可归因 imidazolium chloride[J]. Green Chemistry, 2008, 10(5): 524-531.
2+
于其分子中含有的孤对电子与离子液体 Zn 的空轨道 [15] Huh E S, Zazybin A, Palgunadi J, et al. Zn-containing ionic liquids
之间有较强的络合作用。配位离子液体 CH 3 CONH 2 - for the extractive denitrogenation of a model oil: A mechanistic
consideration[J]. Energy & Fuels, 2009, 23(6): 3032-3038.
0.3ZnCl 2 在回收利用 5 次后，喹啉脱除率仍可达到
[16] Chen X C, Yuan S, Abdeltawab A A, et al. Extractive desulfurization
91.5%，具有较好的重复使用性能。 and denitrogenation of fuels using functional acidic ionic liquids[J].
与其他咪唑类离子液体相比，该配位离子液体 Separation and Purification Technology, 2014, 133: 187-193.
合成简单、成本低廉，可以作为加氢脱氮的补充方 [17] Liu Jie (刘洁), Zhou Zhaoqian (周兆骞), Li Wenshen (李文深), et al.
Removal of basic nitrogen compounds from fuel oil with [Amim]Cl/
法，具有较好的开发前景。
ZnCl 2 ionic liquid[J]. Journal of Fuel Chemistry and Technology (燃
料化学学报), 2016, 44(10): 1233-1239.
参考文献：
[1] Tang Xiaodong (唐晓东), Hu Tao (胡涛), Li Jingjing (李晶晶), et al. （下转第 402 页）