高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (7): 1298-1303.doi: 10.7503/cjcu20150192

• 有机化学 • 上一篇    下一篇

羧基功能化苯并三氮唑类离子液体的合成及在萃取-氧化脱硫中的应用

薛飞, 麻荣, 孙亚栋, 阿布力米提·阿布都卡德, 张永红, 刘晨江()   

  1. 石油天然气精细化工教育部&自治区重点实验室, 乌鲁木齐绿色催化与合成技术重点实验室,新疆大学理化测试中心, 乌鲁木齐 830046
  • 收稿日期:2015-03-11 出版日期:2015-07-10 发布日期:2015-06-17
  • 作者简介:联系人简介: 刘晨江, 男, 博士, 教授, 主要从事有机合成方法学和功能杂环化合物的合成研究. E-mail:pxylcj@126.com
  • 基金资助:
    新疆维吾尔自治区自然科学基金(批准号: 2012211A015)资助

Syntheses of Carboxyl Functionalized Benzotriazol-based Ionic Liquids and Their Application in Extraction-oxidative Desulfurization

XUE Fei, MA Rong, SUN Yadong, ABDUKADERA Ablimit, ZHANG Yonghong, LIU Chenjiang*()   

  1. Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Physics and Chemistry Detecting Center, Xinjiang University, Urumqi 830046, China
  • Received:2015-03-11 Online:2015-07-10 Published:2015-06-17
  • Contact: LIU Chenjiang E-mail:pxylcj@126.com
  • Supported by:
    † Supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region, China(No.2012211A015)

摘要:

合成了新型离子液体(ILs)1-烷基-3-羧甲基苯并三氮唑双三氟甲磺酰亚胺盐, 并对其进行了表征. 将其与双氧水组成催化氧化体系, 考察了脱除模型油品中硫化物的效果. 结果表明, 以离子液体1-5基-3-羧甲基苯并三氮唑双三氟甲磺酰亚胺盐[C2O2BBTA][NTf2]为萃取/催化剂, 设定n(H2O2)∶n(S)=2.5∶1, m(模型油)∶m(离子液体)=5∶1, 在75 ℃下反应1 h后, 模型油中二苯并噻吩(DBT)、 苯并噻吩(BT)和4,6-二甲基二苯并噻吩(4,6-DMDBT)的脱硫率分别为98.3%, 98.3%和96.6%. 所合成离子液体重复使用10次, 脱硫率无明显变化. 该方法操作简单、 反应条件温和, 可以实现深度脱硫.

关键词: 苯并三氮唑, 离子液体, 萃取-氧化, 脱硫

Abstract:

A new class of ionic liquids(ILs) 1-alkyl-3-carboxymethyl double trifluoromethanesulfonimide was synthesized and characterized. Ionic liquids and hydrogen peroxide were tested in extraction-oxidative desulfurization system, and the sulphur removal efficiency of S-compounds in the model oil was investigated. The results showed that the 1-butyl-3-carboxymethyl double trifluoromethanesulfonimide salt([C2O2BBTA][NTf2]) was both extractant and catalyst, n(H2O2)∶n(S)=2.5∶1, m(Model oil)∶m(Ionic liquid)=5∶1, at 75 ℃ for 1 h. The ratios of desulfurization to the model oil of dibenzothiophene(DBT), benzothiophene(BT) and 4,6-dimethyldibenzothiophene(4,6-DMDBT) reached 98.3%, 98.3% and 96.6%. Ionic liquid can be recycled for 10 times with an unnoticeable decrease in desulfurization activity. The method can realize deep desulfurization the depth have the advantages of both simple operation and mild reaction condition.

Key words: Benzotriazole, Ionic liquid, Extraction-oxidative, Desulfurization

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