Deep Oxidative Desulfurization of Fuels Catalyzed by Ionic Liquid in the Presence of H<sub>2</sub>O<sub>2</sub>

Lu, Liang; Cheng, Shifu; Gao, Jiangang; Gao, Guohua; He, Min

doi:10.1021/ef060345o

Cited by 164 publications

(115 citation statements)

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“…More recently, a new and effective approach that is chemical oxidation in conjunction with ILs extraction (ECODS) has been explored in order to improve the efficiency of desulfurization [3]. However, to date, the efficiency of ECODS system for FCC gasoline is still low [4][5][6][7][8][9][10][11][12][13][14], because the major sulfur-containing compounds of FCC gasoline, thiophene, and its derivatives are difficult to be oxidized [15].…”

Section: Introductionmentioning

confidence: 99%

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Zhang¹,

Jiang²,

Li³

et al. 2012

Journal of Catalysis

162

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Section: Introductionmentioning

confidence: 99%

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Zhang¹,

Jiang²,

Li³

et al. 2012

Journal of Catalysis

162

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“…This trend is in agreement with previous studies (Lo et al, 2003;Kim et al, 2012) wherein the oxidation of thiophene and its derivatives leads to a more efficient extraction of the oxidized products (sulfoxides and sulfones of thiophene) into the ionic liquid phase. This increase in efficiency can be attributed to a better complementarity of the polarity of the ionic liquids with those of the sulfoxides and sulfones (Lo et al, 2003;Kim et al, 2004;Chen et al, 2006;Dekhordi et al, 2009) (Chen et al, 2006;Dehkordi et al, 2009;Lu et al, 2007;Ahosseini and Scurto, 2008;Gardas and Countinho, 2008;Pereiro et al, 2009). It is apparent that an increase in the viscosity of the IL decreases the extraction efficiency; an increase in the viscosity of the IL decreases its extent of contact with the model oil.…”

Section: It Has Been Observed In Both Oxidative and Non-oxidative Desmentioning

confidence: 99%

Efficient Oxidative Desulfurization of Model Oil at Room Temperature with Ionic Liquid as Extraction Solvent

Chiu

Arco

Ping³

et al. 2013

KIMIKA

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The oxidative desulfurization of model oil (hexane solution of thiophene) was carried out at room temperature in a two-step method involving: 1) the acetic acid catalyzed oxidation of thiophene with hydrogen peroxide and 2) the subsequent extraction of the oxidized products with three 1-alkyl-3-methylimidazolium bromide [RMIM]Br ionic liquids of varying alkyl substituent R chain length (R: C2, C4, C6) and with acetonitrile as control. For purposes of comparison, a non-oxidative extractive desulfurization of model oil with the above ionic liquid and with acetonitrile was also performed. The thiophene extraction efficiencies of the ionic liquids and that of the control in both the oxidative and non-oxidative procedures were determined by means of gas chromatography. The ionic liquid of the shortest alkyl substituent chain length (R: C2), [EMIM] Br exhibited the highest extraction efficiency in the oxidative desulfurization of the model oil; the extraction efficiency of [EMIM] Br was also observed to exceed that of acetonitrile. In general, the oxidative desulfurization with the above [RMIM]Br's is apparently a more efficient method of thiophene removal from the model oil as compared to a non-oxidative procedure with the same extraction solvents. The extraction efficiency of [RMIM]Br's was observed to decrease with the lengthening of the alkyl substituent chain. The same trend is observed in the non-oxidative extractive desulfurization of the model oil. Recyclability analysis of [EMIM]Br showed that [EMIM]Br can be recycled thrice with no significant decrease in extraction efficiency.

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“…Cheng and Yen (2008) stated that ILs can be used as phase-transfer catalysts for deep oxygenative desulfurization. Lu et al (2006) found that the sulfur removal from dibenzothiophene-containing model oil can be in the range of 60-93%, depending on the reaction temperature, and this was superior to simple extraction with ILs, but they used H2O2 as the oxidant. Zhao et al (2007) suggested that a coordination compound was generated between H2O2 and the cation of the IL and that it decomposed to produce hydroxyl radicals.…”

Section: Destruction Of Thiophenementioning

confidence: 99%

Investigating the Long-Term Stability and Kinetics of Superoxide Ion in Dimethyl Sulfoxide Containing Ionic Liquids and the Application of Thiophene Destruction

Hayyan

Ibrahim

Hayyan

et al. 2017

Braz. J. Chem. Eng.

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-after the introduction of the IL was monitored using a UV-vis spectrophotometer. The ammoniumbased ILs were found to be more stable than piperidinium-based ILs. To the best of our knowledge, this was the first time that O2 − stability with ILs has been monitored continuously for up to 24 h. This should provide a better insight into the stability and kinetics of O2 − for industrial applications and its role in energy-storage devices. The most appropriate IL as a medium was [EDMPAmm][TFSI], and O2 − generated in this IL was used to destroy nearly 90% of thiophene.

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Deep Oxidative Desulfurization of Fuels Catalyzed by Ionic Liquid in the Presence of H₂O₂

Cited by 164 publications

References 16 publications

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Efficient Oxidative Desulfurization of Model Oil at Room Temperature with Ionic Liquid as Extraction Solvent

Investigating the Long-Term Stability and Kinetics of Superoxide Ion in Dimethyl Sulfoxide Containing Ionic Liquids and the Application of Thiophene Destruction

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Deep Oxidative Desulfurization of Fuels Catalyzed by Ionic Liquid in the Presence of H2O2

Cited by 164 publications

References 16 publications

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Catalytic oxidation of thiophene and its derivatives via dual activation for ultra-deep desulfurization of fuels

Efficient Oxidative Desulfurization of Model Oil at Room Temperature with Ionic Liquid as Extraction Solvent

Investigating the Long-Term Stability and Kinetics of Superoxide Ion in Dimethyl Sulfoxide Containing Ionic Liquids and the Application of Thiophene Destruction

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Deep Oxidative Desulfurization of Fuels Catalyzed by Ionic Liquid in the Presence of H₂O₂