氯化胆碱/草酸型低共熔溶剂氧化脱除模拟油硫化物

李佳慧; 胡嘉; 赵荣祥; 乔海燕; 李秀萍

氯化胆碱/草酸型低共熔溶剂氧化脱除模拟油硫化物

1.
辽宁石油化工大学化学化工与环境学部石油化工学院, 辽宁抚顺 113001;
2.
辽宁石油化工大学化学化工与环境学部化学与材料科学学院, 辽宁抚顺 113001

详细信息

通讯作者:
赵荣祥，男，博士，副教授，主要从事石油加工方面研究。E-mail：zylhzrx@126.com。

中图分类号: TE624
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出版历程
- 收稿日期: 2014-01-21
- 修回日期: 2014-04-20
- 刊出日期: 2014-07-30

Oxidative desulfurization of model oil with choline chloride/oxalic acid as a eutectic solvent

1.
College of Petrochemical Engineering, Liaoning University of Petroleum & Chemical Technology, Fushun 113001, China;
2.
College of Chemistry & Material Science Engineering, Liaoning University of Petroleum & Chemical Technology, Fushun 113001, China

摘要

摘要: 通过氯化胆碱和草酸在100℃下搅拌，合成了氯化胆碱/草酸型低共熔溶剂。以氯化胆碱/草酸为催化剂、过氧化氢为氧化剂、咪唑氟硼酸盐离子液体为萃取剂氧化萃取一体法脱除模拟油中的二苯并噻吩（DBT）。考察了反应温度、反应时间、氧化剂加入量、萃取剂类型、硫化物类型等因素对脱硫效率的影响。结果表明，当以咪唑氟硼酸盐为萃取剂，n（H₂O₂）/n（S）=8、反应温度30℃、反应80 min时，二苯并噻吩的脱除率可以达到95%。催化剂重复使用5次后，脱硫率仍然保持在90%。
- 氯化胆碱 /
- 草酸 /
- 低共熔溶剂 /
- 二苯并噻吩 /
- 氧化脱硫
Abstract: Choline chloride/oxalic acid as a eutectic solvent was synthesized by the reaction of choline chloride with oxalic acid at 100℃ via simple stirring. The removal of dibenzothiophene (DBT) in model oil was carried out by using choline chloride/oxalic acid as a catalyst, hydrogen peroxide as oxidant, imidazolium tetrafluoroborate ionic liquid as extractant; the influence of reaction temperature and time, the amount of hydrogen peroxide, the type of extractant, the type of sulfur-containing compound (thiophene and its homologues) on the desulfurization efficiency were investigated. The results indicated that under the optimal reaction conditions of n(H₂O₂)/n(S)=8, reaction temperature of 30℃ and time of 80 min, the desulfurization efficiency for DBT reaches 95%. Moreover, the reaction system can be recycled for 5 times without a significant decrease in the desulfurization activity.
- choline chloride /
- oxalic acid /
- eutectic solvent /
- dibenzothiophene /
- oxidative desulfurization

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