Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids

doi:10.1007/s11705-010-0539-0

Frontiers of Chemical Science and Engineering

2011, Vol. 5

Issue (1): 107-112 https://doi.org/10.1007/s11705-010-0539-0

RESEARCH ARTICLE

本期目录

Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids

Xiaomeng WANG¹, Mingjuan HAN², Hui WAN¹, Cao YANG¹, Guofeng GUAN¹(

)

1. College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China; 2. College of Sciences, Nanjing University of Technology, Nanjing 210009, China

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Abstract：

Br?nsted acidic ionic liquids (ILs), N-methylimidazole hydrogen sulfate ([HMIm]HSO₄) and N-methylpyrrolidone hydrogen sulfate ([HNMP]HSO₄), are synthesized and employed as extractants to extract thiophene from model gasoline (thiophene dissolved in n-octane). The effect of extraction temperature, extraction time and volume ratio of ILs to model gasoline on desulfurization rates is investigated. Then, the optimal desulfurization conditions are obtained: the ratio of ILs to model gasoline is 1∶1, extraction temperature is 50°C for [HMIm]HSO₄ and 60°C for [HNMP]HSO₄, extraction time is 60 min. Meanwhile, the desulfurization rate of [HNMP]HSO₄ for model gasoline is 62.8%, which is higher than that of [HMIm]HSO₄ (55.5%) under optimal conditions. The reason is discussed on the basis of the interaction energy between thiophene and ILs at the B3LYP/6-311++ G(d,p) level. Furthermore, the total desulfurization rate of [HNMP]HSO₄ and [HMIm]HSO₄ reaches 96.4% and 94.4%, respectively, by multistage extraction. Finally, the used ILs can be reused by vacuum drying, and their desulfurization rates are not significantly decreased after recycling 7 times in single-stage desulfurization.

Key words： br?nsted ionic liquids model gasoline thiophene extraction density functional theory

收稿日期: 2009-10-20 出版日期: 2011-03-05

Corresponding Author(s): GUAN Guofeng,Email:guangf@njut.edu.cn

引用本文:

. Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids[J]. Frontiers of Chemical Science and Engineering, 2011, 5(1): 107-112.
Xiaomeng WANG, Mingjuan HAN, Hui WAN, Cao YANG, Guofeng GUAN. Study on extraction of thiophene from model gasoline with br?nsted acidic ionic liquids. Front Chem Sci Eng, 2011, 5(1): 107-112.

链接本文:

https://academic.hep.com.cn/fcse/CN/10.1007/s11705-010-0539-0
https://academic.hep.com.cn/fcse/CN/Y2011/V5/I1/107

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