scholarly journals Oxidative desulfurization of model oil in an organic biphasic system catalysed by Fe3O4@SiO2–ionic liquid

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 34972-34983 ◽  
Author(s):  
Abdolhamid Alizadeh ◽  
Mitra Fakhari ◽  
Mohammad Mehdi Khodeai ◽  
Gisya Abdi ◽  
Jhaleh Amirian
Keyword(s):  
Ionic Liquid ◽  
Oxidative Desulfurization ◽  
Biphasic System ◽  
Model Oil

The oxidation of DBT to sulfone catalyzed by Fe3O4/SiO2/ionic liquid.

Efficient pyridinium-based ionic liquid for deep oxidative desulfurization of model oil

2020 ◽  
Vol 310 ◽  
pp. 113146 ◽  
Author(s):  
Hosni Ahmed Elwan ◽  
Magdy T. Zaky ◽  
Amal S. Farag ◽  
Fathi S. Soliman ◽  
M. Ezel Dean Hassan
Keyword(s):  
Ionic Liquid ◽  
Oxidative Desulfurization ◽  
Model Oil

Photocatalytic Oxidative Desulfurization of Model Oil Using Cu/TiO2 Photocatalyst and Eutectic Based Ionic Liquid: Effect of Metal Loading

2014 ◽  
Vol 699 ◽  
pp. 210-214 ◽  
Author(s):  
Hayyiratul Fatimah Mohd Zaid ◽  
Chong Fai Kait ◽  
Muhammad Ibrahim Abdul Mutalib
Keyword(s):  
Ionic Liquid ◽  
Titanium Dioxide ◽  
Sulfur Compound ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
Copper Metal ◽  
Metal Loading ◽  
Model Oil

Titanium dioxide (TiO2) photocatalyts doped with copper metal at different metal loadings were successfully prepared and characterized. Photocatalytic oxidative desulfurization of model oil containing dibenzothiophene as the sulfur compound (100 ppm) was investigated using the prepared photocatalyst. The photocatalyst with 2.0 wt% Cu metal loading showed the best sulfur removal at 66.25%.

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

KIMIKA ◽  
2013 ◽  
Vol 24 (1) ◽  
pp. 2-7
Author(s):  
Harold Henrison C. Chiu ◽  
Susan D. Arco ◽  
Zhang Chun Ping ◽  
Nelson R. Villarante
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chain Length ◽  
Room Temperature ◽  
Extraction Efficiency ◽  
Oxidative Desulfurization ◽  
Alkyl Substituent ◽  
Step Method ◽  
Extraction Solvent ◽  
Model Oil

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.

Fabrication of dual-mesoporous silica by triblock copolymers and metal-based ionic liquid: efficient and durable catalyst for oxidative desulfurization in fuel

RSC Advances ◽  
2015 ◽  
Vol 5 (126) ◽  
pp. 104322-104329 ◽  
Author(s):  
Lei Yang ◽  
Jun Xiong ◽  
Hongping Li ◽  
Ming Zhang ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Silica ◽  
High Efficiency ◽  
Triblock Copolymers ◽  
Oxidative Desulfurization ◽  
Model Oil ◽  
Very High ◽  
Excellent Stability

The D-MoO3–SiO2 material with two uniform sets of mesopores exhibited a very high efficiency and excellent stability in the oxidative desulfurization of model oil.

Immobilization of Acidic Ionic Liquid on Silica Gel for Catalytic Oxidative Desulfurization of Fuel Oils(II): Desulfurization

2015 ◽  
Vol 1090 ◽  
pp. 183-187 ◽  
Author(s):  
Kai Peng Cheng ◽  
Hao Yang ◽  
Jian Hong Wang ◽  
Hui Peng Liu ◽  
Cong Zhen Qiao
Keyword(s):  
Ionic Liquid ◽  
Reaction Time ◽  
Silica Gel ◽  
Oxidative Desulfurization ◽  
Molar Ratio ◽  
Acidic Ionic Liquid ◽  
Fuel Oils ◽  
Catalytic Oxidative Desulfurization ◽  
Highly Dispersed ◽  
Model Oil

A series of highly dispersed ionic liquid catalysts were used for the oxidation desulfurization of dibenzothiophene (DBT) in model oil in the presence of H2O2. The effects of the loading of [BMIM]HSO4immobilized, reaction time, temperature, O/S molar ratio and the dosage of catalysts on DBT removal were investigated in detail. The catalyst with the loading of [BMIM]HSO4was 25% exhibited the highest activity. The DBT removal of model oil can reach 99.9% in 5 h at 60 °C, O/S molar ratio of 10, Vmodeloil=10mL, mcatalysts=2.00g. The catalysts can be easily recycled and can be recycled 2 times without a significant decrease in activity.

Deep oxidative desulfurization catalyzed by an ionic liquid-type peroxotungsten catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25904-25910 ◽  
Author(s):  
Jizhong Chen ◽  
Chen Chen ◽  
Ran Zhang ◽  
Li Guo ◽  
Li Hua ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Solvent Free ◽  
Deep Desulfurization ◽  
Solvent Free Conditions ◽  
Liquid Type ◽  
Model Oil

Peroxotungsten anion-based ionic liquid-type catalysts carried out the deep desulfurization of model oil with H2O2 under mild and solvent-free conditions with high efficiency.

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