Catalytic oxidative desulfurization of benzothiophene with hydrogen peroxide over Fe/AC in a biphasic model diesel-acetonitrile system

— The catalytic oxidative desulfurization (Cat-ODS) process has been introduced as a new technology to achieve ultra-low sulphur levels in diesel fuels. In this study, the performance of the alumina supported iron oxide based catalysts doped with cobalt, synthesized via wet impregnation method on the Cat-ODS of the model diesel with the total sulphur 500ppm was investigated using tert-butyl hydroperoxide (TBHP) as an oxidizing agent and N,N-dimethylformamide as an extraction solvent. A series of dopant was being screened. Co/Fe-Al2O3 (10:90) and Co/Fe-Al2O3 (20:80) prepared at 400°C. Overall, the catalytic activity decreased as dopant ratio increased. Catalyst with 10 wt% of Co was successfully removed 96% of thiophene, 100% of DBT and 92% of 4,6-DMDBT in model diesel. Further investigation, potential catalyst that calcined at 400°C contributed higher sulphur removal compared to the catalyst calcined at 500°C. X-ray diffraction analysis (XRD) result showed that Co/Fe-Al2O3 (10:90) prepared at 400°C was amorphous, while micrograph of the field emission scanning electron microscopy (FESEM) illustrated an inhomogeneous distribution of various particle sizes. The energy dispersive X-ray analysis (EDX) result have confirmed the presence of Fe and Co in all of the prepared catalyst.

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Oxidative desulfurization of model diesel oil over Ti-containing molecular sieves using hydrogen peroxide

Reaction Kinetics and Catalysis Letters ◽

10.1007/s11144-007-5065-9 ◽

2007 ◽

Vol 92 (1) ◽

pp. 155-163 ◽

Cited By ~ 23

Author(s):

Suhua Cui ◽

Feng Ma ◽

Yaquan Wang

Keyword(s):

Hydrogen Peroxide ◽

Molecular Sieves ◽

Oxidative Desulfurization ◽

Diesel Oil ◽

Model Diesel

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Catalytic oxidative desulfurization of diesel utilizing hydrogen peroxide and functionalized-activated carbon in a biphasic diesel–acetonitrile system

Fuel Processing Technology ◽

10.1016/j.fuproc.2010.03.021 ◽

2010 ◽

Vol 91 (9) ◽

pp. 1105-1112 ◽

Cited By ~ 63

Author(s):

Kok-Giap Haw ◽

Wan Azelee Wan Abu Bakar ◽

Rusmidah Ali ◽

Jiunn-Fat Chong ◽

Abdul Aziz Abdul Kadir

Keyword(s):

Hydrogen Peroxide ◽

Activated Carbon ◽

Oxidative Desulfurization ◽

Catalytic Oxidative Desulfurization

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Hydrogen peroxide oxidative desulfurization of model diesel mixtures using azacrown ethers

Petroleum Chemistry ◽

10.1134/s0965544114030098 ◽

2014 ◽

Vol 54 (4) ◽

pp. 316-322 ◽

Cited By ~ 4

Author(s):

E. V. Rakhmanov ◽

S. V. Baranova ◽

Zixiao Wang ◽

A. V. Tarakanova ◽

S. V. Kardashev ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Oxidative Desulfurization ◽

Azacrown Ethers ◽

Model Diesel

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Hydrogen peroxide oxidative desulfurization of model diesel fuel mixtures in the presence of crown ethers and transition metal peroxo complexes

Petroleum Chemistry ◽

10.1134/s0965544111020101 ◽

2011 ◽

Vol 51 (3) ◽

pp. 216-221 ◽

Cited By ~ 4

Author(s):

E. V. Rakhmanov ◽

Dan Jinyuan ◽

O. A. Fedorova ◽

A. V. Tarakanova ◽

A. V. Anisimov

Keyword(s):

Hydrogen Peroxide ◽

Transition Metal ◽

Crown Ethers ◽

Diesel Fuel ◽

Oxidative Desulfurization ◽

Peroxo Complexes ◽

Model Diesel ◽

Fuel Mixtures

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Effect of Preparation Method on Ag Modified Ti-HMS Catalyst Structure and Catalytic Oxidative Desulfurization Performance

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2017-0112 ◽

2017 ◽

Vol 16 (3) ◽

Author(s):

Fang Wang ◽

Guangjian Wang ◽

Liancheng Bing ◽

Yong Wang ◽

Aixiu Tian ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Molecular Sieves ◽

Oxidative Desulfurization ◽

Mesoporous Structure ◽

Catalytic Performance ◽

Mesoporous Molecular Sieves ◽

Precipitation Method ◽

Molar Ratio ◽

Extraction Solvent ◽

Catalytic Oxidative Desulfurization

AbstractAg modified mesoporous molecular sieves Ti-HMS were prepared by in-situ synthesis (Ag/Ti-HMS-I), deposition-precipitation method (Ag/Ti-HMS-D) and ultrasound-assisted impregnation methods (Ag/Ti-HMS-U), respectively. The catalytic performance of catalysts in the oxidative desulfurization(ODS) of benzothiophene with hydrogen peroxide (H2O2) has been investigated. The physicochemical properties of the catalysts were characterized by XRD, SEM, BET and FT-IR techniques. Experimental results showed that the catalyst Ag/Ti-HMS-U exhibited the best catalytic activity, and this maybe because the catalyst possessed relatively good mesoporous structure and high Ag dispersion. Under the best operating condition for the catalytic oxidative desulfurization: temperature 60 °C, atmospheric pressure, 0.1 g catalysts, 8 molar ratio of hydrogen peroxide to sulfur, using acetonitrile as extraction solvent for double extraction, the sulfur content in model diesel fuel (MDF) was reduced from 800 ppm to 17 ppm with 97.8% of total sulfur after 1 h.

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