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学科主题: 物理化学
题名: Desulfurization by oxidation combined with extraction using acidic room-temperature ionic liquids
作者: Chi Yansheng1, 3;  Li Changping1, 2;  Jiao Qingzhu3;  Liu Qingshan1;  Yan Peifang1;  Liu Xiumei1;  Welz-Biermann, Urs1
通讯作者: 李长平 ;  UrsWelz-Biermann
刊名: GREEN CHEMISTRY
发表日期: 2011
DOI: 10.1039/c0gc00745e
卷: 13, 期:5, 页:1224-1229
收录类别: SCI
文章类型: Article
部门归属: 2
项目归属: 207
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
摘要: Desulfurization by oxidation combined with extraction using acidic room-temperature ionic liquids
研究领域[WOS]: Chemistry
英文摘要: Room-temperature ionic liquids (ILs) are commonly used for desulfurization by extraction for their unique solvent characteristics. In this study, 1-ethyl-3-(4-sulfobutyl)imidazolium bis(trifluoromethanesulfonyl)imide ([EimC(4)SO(3)H]NTf2) was used as catalyst and extractant for desulfurization of DBT in n-octane. The results show that dibenzothiophene (DBT) could be removed from the oil phase effectively by this process, and that the sulfur content in a model oil could be decreased from 1600 ppm to less than 20 ppm. The extraction efficiency of the IL was greatly influenced by the structure of the anions and cations. The order of extraction capability of ILs was [EimC(4)SO(3)H]NTf2 > [EimC(4)SO(3)H]HSO4 > [C4Py]NTf2 > [Bmim]NTf2 > [Bmim]PF6. Experiments on the recycling and reuse of the room-temperature IL were also performed, and we found that [EimC(4)SO(3)H]NTf2 could be recycled 5 times without significant decrease in the desulfurization activity. The extraction mechanism was also probed in detail, and we found that DBT was oxidized to its corresponding sulfone by H2O2 and NaClO, which was then extracted by the IL phase. However, different extraction mechanisms are at work with different oxidants.
关键词[WOS]: OIL REFINERY STREAMS ;  DEEP DESULFURIZATION ;  CHEMICAL OXIDATION ;  FUELS ;  EFFICIENCY ;  SOLVENT ;  DESIGN ;  SULFUR ;  DIESEL
语种: 英语
WOS记录号: WOS:000290227800028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115863
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian, Peoples R China
2.Dalian Univ, Coll Chem Engn & Environm, Dalian, Peoples R China
3.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian, Peoples R China

Recommended Citation:
Chi Yansheng,Li Changping,Jiao Qingzhu,et al. Desulfurization by oxidation combined with extraction using acidic room-temperature ionic liquids[J]. GREEN CHEMISTRY,2011,13(5):1224-1229.
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