Ultrasound-assisted oxidative desulfurization (UAOD) using phosphotungstic acid: effect of process parameters on sulfur removal

Deep desulfurization of a hydrotreated diesel fuel was investigated with H2O2oxidation coupled with solvent extraction intensified by ultrasound. The process parameters for the oxidation desulfurization of diesel fuel, such as the type and dosage of catalyst, co-solvent, ultrasound time, molar ratio of H2O2and sulfur were investigated. The results showed that sulfur content of the hydrotreated diesel fuel was reduced from 140 ppm to 10 ppm with using 2%wt of phosphotungstic acid as catalyst, 20%wt of methanol as co-solvent during the reaction, reaction temperature at 90°C, ultrasound time for 10 min and H2O2/S molar ratio of 16, and ultrasound irradiation had the obvious reinforcement in oxidative desulfurization of diesel fuel.

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Sulfur removal from hydrotreated petroleum fractions using ultrasound-assisted oxidative desulfurization process

Fuel ◽

10.1016/j.fuel.2011.01.030 ◽

2011 ◽

Vol 90 (6) ◽

pp. 2158-2164 ◽

Cited By ~ 99

Author(s):

Fábio A. Duarte ◽

Paola de A. Mello ◽

Cezar A. Bizzi ◽

Matheus A.G. Nunes ◽

Elizabeth M. Moreira ◽

...

Keyword(s):

Sulfur Removal ◽

Oxidative Desulfurization ◽

Petroleum Fractions ◽

Desulfurization Process ◽

Ultrasound Assisted

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Ultrasound-assisted oxidative desulfurization process of liquid fuel by phosphotungstic acid encapsulated in a interpenetrating amine-functionalized Zn(II)-based MOF as catalyst

Ultrasonics Sonochemistry ◽

10.1016/j.ultsonch.2016.07.006 ◽

2017 ◽

Vol 34 ◽

pp. 713-720 ◽

Cited By ~ 35

Author(s):

Ahmad Afzalinia ◽

Abbas Mirzaie ◽

Ahmad Nikseresht ◽

Tahereh Musabeygi

Keyword(s):

Liquid Fuel ◽

Phosphotungstic Acid ◽

Oxidative Desulfurization ◽

Amine Functionalized ◽

Desulfurization Process ◽

Ultrasound Assisted

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Ultrasound-assisted oxidative desulfurization of Arabian extra light oil (AXL) with molecular characterization of the sulfur compounds

Fuel ◽

10.1016/j.fuel.2021.121612 ◽

2021 ◽

Vol 305 ◽

pp. 121612

Author(s):

Jiyuan Fan ◽

Aiping Chen ◽

Saumitra Saxena ◽

Sundaramurthy Vedachalam ◽

Ajay K. Dalai ◽

...

Keyword(s):

Molecular Characterization ◽

Oxidative Desulfurization ◽

Sulfur Compounds ◽

Light Oil ◽

Ultrasound Assisted

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Ultrasound-Assisted Oxidative Desulfurization of Diesel Fuel in H2O2/Heteropoly Acid/Solvent System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1033-1034.85 ◽

2014 ◽

Vol 1033-1034 ◽

pp. 85-89 ◽

Cited By ~ 1

Author(s):

Guo Xian Yu ◽

Qian Zhong ◽

Mei Jin ◽

Ping Lu

Keyword(s):

Sulfur Content ◽

Ultrasonic Irradiation ◽

Diesel Fuel ◽

Oxidation Reaction ◽

Heteropoly Acid ◽

Oxidative Desulfurization ◽

Solvent System ◽

Oxidative Reaction ◽

Solvent Systems ◽

Ultrasound Assisted

Ultrasound-assisted oxidative desulfurization (UAODS) of diesel fuel in H2O2/Heteropoly acid/Solvent systems, was investigated. Effects of solvent, catalyst, ultrasound and reaction temperature on the oxidation desulfurization of diesel fuel were investigated. When MPA/oil was 2%wt, methanol/diesel fuel was 20%wt, ultrasound power was 400 W and ultrasound time was 10 min, the sulfur content of diesel fuel was decreased from 211 ppm to 19 ppm. The use of ultrasonic irradiation in H2O2/Heteropoly acid/Solvent system significantly improved the efficiency of the oxidation reaction, and solvent was helpful to make the oxidative reaction happen in the same one phase.

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Efficient Oxidative Desulfurization (ODS) of Commercial Diesel with TBHP under Mild Conditions Catalyzed by Polymolybdates Supported on Al2O3

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1107.341 ◽

2015 ◽

Vol 1107 ◽

pp. 341-346

Author(s):

Wan Nazwanie Wan Abdullah ◽

Rusmidah Ali ◽

Wan Azelee Wan Abu Bakar

Keyword(s):

Sulfur Content ◽

Research Work ◽

Sulfur Removal ◽

Oxidative Desulfurization ◽

Catalyst System ◽

Impregnation Method ◽

Butyl Hydroperoxide ◽

Tert Butyl ◽

Alternative Method ◽

Tert Butyl Hydroperoxide

Due to the low specifications for sulfur content in diesel, a lot of research work are been conducted to develop alternative method for desulfurization. Catalytic oxidative desulfurization (Cat-ODS) has been found to be an alternative method to replace a conventional method which is hydrodesulfurization.New catalyst formulation using tert-butyl hydroperoxide polymolybdate based catalyst system was investigated in this research utilizing tert-butyl hydroperoxide (TBHP) as oxidant and dimethylformamide (DMF) as solvent for extraction. A series of polymolybdate supported alumina catalysts were prepared using wet impregnation method, ageing at ambient room temperature for 24 hours and followed by calcination process. A commercial diesel with 440 ppmw of total sulfur was employed to evaluate the elimination of sulfur compounds. Besides, the percentage of sulfur removal was measured by gas chromatography-flame photometric detector (GC-FPD). The sulfur content in commercial diesel was successfully reduced from 440 ppmw to 35 ppmw under mild condition followed by solvent extraction. From catalytic testing, Mo-Al2O3 calcined at 500°C was revealed as the most potential catalyst which gave 92% of sulfur removal.

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