用含咪唑的离子液体萃取柴油中的含硫化合物和多环芳烃化合物

IF 0.4 Q4 CHEMISTRY, MULTIDISCIPLINARY Chemistry for Sustainable Development Pub Date : 2024-06-14 DOI:10.15372/csd2024541
 S. KOBOTAEVA N,  V. SAVINYKH YU,  S. SKOROKHODOVA T
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引用次数: 0

摘要

研究了用基于咪唑的离子液体(IL)萃取柴油(DF)中的含硫化合物,咪唑环 1 位上有不同的取代基(丁基、辛基、壬基、十二烷基、十六烷基);用气相色谱-质谱法测定了初始柴油和纯化柴油中含硫化合物和多环芳烃(PAH)的成分。确定了最佳萃取条件:温度 30-35 °C,萃取时间 60 分钟,DF/IL 比率 1.66-2。对 DF 中含硫化合物最有效的萃取剂是 1-壬基-3-甲基溴化咪唑鎓,它可以将总硫含量从 0.369 wt%降至 0.143 wt%。对二苯并噻吩(DBT)和多环芳烃衍生物的组和个体成分的研究结果表明,DBT 衍生物和三环芳烃的萃取率为 66-72%。萘及其同系物的萃取率较低,仅为 37%。在 DBT 同系物中,二甲基二苯并噻吩的萃取最为彻底。
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EXTRACTION OF SULPHUR-CONTAINING AND POLYCYCLIC AROMATIC COMPOUNDS OF DIESEL FUEL WITH IMIDAZOLE-CONTAINING IONIC LIQUIDS
The extraction of sulphur-containing compounds of diesel fuel (DF) with ionic liquids (IL) based on imidazole with various substituents (butyl, octyl, nonyl, dodecyl, cetyl) in position 1 of the imidazole ring has been studied; the composition of sulphur-containing compounds and polycyclic aromatic hydrocarbons (PAH) has been determined by gas chromatography - mass spectrometry in the initial and purified diesel fuel. The optimal extraction conditions are determined: temperature 30-35 °C, extraction time 60 min, DF/IL ratio 1.66-2. The most effective extractant for the sulphur-containing compounds of DF is 1-nonyl-3-methylimidazolium bromide, which allows reducing the total sulphur content from 0.369 to 0.143 wt%. Results of the studies of group and individual composition of dibenzothiophene (DBT) and PAH derivatives show that the degree of extraction of DBT derivatives and tricyclic aromatic hydrocarbons is 66-72 %. Naphthalene and its homologues are extracted to a lesser extent - 37 %. Among DBT homologues, dimethyldibenzothiophene is extracted most completely.
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来源期刊
Chemistry for Sustainable Development
Chemistry for Sustainable Development CHEMISTRY, MULTIDISCIPLINARY-
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52
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