Synthesis of EMIES/<i>p</i>-TsOH type deep eutectic solvent and its oxidative desulfurization performance

WANG Xin-bo; LI Xiu-ping; ZHAO Rong-xiang

Volume 47 Issue 1

Jan. 2019

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WANG Xin-bo, LI Xiu-ping, ZHAO Rong-xiang. Synthesis of EMIES/p-TsOH type deep eutectic solvent and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2019, 47(1): 104-112.

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WANG Xin-bo, LI Xiu-ping, ZHAO Rong-xiang. Synthesis of EMIES/p-TsOH type deep eutectic solvent and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2019, 47(1): 104-112.

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Synthesis of EMIES/p-TsOH type deep eutectic solvent and its oxidative desulfurization performance

College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China

Funds:

Doctoral Fund of Liaoning Province 201501105

Received Date: 2018-09-17
Rev Recd Date: 2018-11-02

Available Online: 2021-01-23

Publish Date: 2019-01-10

Abstract

Abstract

The deep eutectic solvent (DESs) of EMIES/p-TsOH was synthesized by stirring a mixture of 1-ethyl-3-methylimidazolium ethyl sulfate (EMIES) and p-toluene sulfonic acid (p-TsOH), the structure of catalysts was characterized by infrared analysis (FT-IR), hydrogen spectrum analysis (¹H-NMR) and thermogravimetric analysis(TG), the desulfurization performance of model oil was investigated using EMIES/p-TsOH as a catalyst and extraction agent and using H₂O₂ as the oxidation, and the effects of the temperature, n(H₂O₂)/n(S) molar ratio, and the amount of DESs on the desulfurization activity were investigated in detail. Under the optimal conditions, the removal rate of dibenzothiophene (DBT), 4, 6-dimethyldibenzothiophene (4, 6-DMDBT) and benzothiophene (BT) can reach up to 96.2%, 92.2% and 88.8%, respectively. After five recycling runs, the removal rate of DBT can still reach 93.6%. The kinetic analysis of the desulfurization system indicates that the apparent activation energy is 66.4 kJ/mol.
- EMIES/p-TsOH,
- deep eutectic solvents,
- oxidation-extraction desulfurization

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References

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