Deep oxidative desulfurization of dibenzothiophene using low-temperature-mediated titanium dioxide catalyst in ionic liquids

Zheng, Dan; Zhu, Wenshuai; Xun, Suhang; Zhou, Miaomiao; Zhang, Ming; Jiang, Wei; Qin, Yuejiao; Li, Huaming

doi:10.1016/j.fuel.2015.06.090

Cited by 64 publications

(33 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The desulfurization tests were performed in a self-made two-necked flask, to which a certain amount of catalysts, DES, model oil and H 2 O 2 were added in turn. The reaction mixture was stirred in a water bath at a set temperature for 3 h. The model oil in the upper layer was periodically withdrawn and analyzed by gas chromatography-flame ionization detection (GC-FID) with the analytical conditions listed in our previous work (Zheng et al 2015;Jiang et al 2014a, b). (Xu et al 2013).…”

Section: Desulfurization Proceduresmentioning

confidence: 99%

Catalytic oxidative desulfurization of fuels in acidic deep eutectic solvents with [(C6H13)3P(C14H29)]3PMo12O40 as a catalyst

et al. 2018

Self Cite

View full text Add to dashboard Cite

Deep eutectic solvents (DESs) are a new class of green solvents analogous to ionic liquids due to their biodegradable capacity and low cost. However, the direct extractive desulfurization of diesel oil by DESs cannot meet the government's standard. In this work, amphiphilic polyoxometalates were synthesized and characterized by FT-IR and mass spectrometry. The oxidative desulfurization results showed that benzothiophene (BT) could be completely removed by employing a [(C 6 H 13) 3 P(C 14 H 29)] 3 PMo 12 O 40 , DES (ChCl/2Ac) and H 2 O 2 system. It was also found that the organic cation of catalysts played a positive role in oxidative desulfurization. The reaction conditions, such as reaction temperature and time, the amount of catalyst and DES and H 2 O 2 /S (O/S) molar ratio, were optimized. Different sulfides were tested to determine the desulfurization selectivity of the optimal reaction system, and it was found that 97.2% of dibenzothiophene (DBT) could be removed followed by 80.7% of 4-MDBT and 76.0% of 4,6-DMDBT. After reaction, the IR spectra showed that the catalyst [(C 6 H 13) 3 P(C 14 H 29)] 3 PMo 12 O 40 was stable during the reaction process and the oxidative product was dibenzothiophene sulfone (DBTO 2). Furthermore, the catalyst can be regenerated and recycled for four runs with little loss of activity.

show abstract

Section: Desulfurization Proceduresmentioning

confidence: 99%

Catalytic oxidative desulfurization of fuels in acidic deep eutectic solvents with [(C6H13)3P(C14H29)]3PMo12O40 as a catalyst

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…International policies have adopted increasingly strict requirements to eliminate the hazardous emissions of sulfur oxides [2]. Therefore, the production of sulfur-free fuels has become of major interest in both academic and industrial research [3]. Extractive and catalytic oxidative desulfurization (ECODS) is considered the most promising complementary method to conventional desulfurization technology used in refineries [4].…”

Section: Introductionmentioning

confidence: 99%

Efficient Oxidative Desulfurization Processes Using Polyoxomolybdate Based Catalysts

et al. 2018

View full text Add to dashboard Cite

This work proposes an efficient desulfurization system to produce low sulfur diesel under sustainable and moderate experimental conditions. Treatment of a real diesel with a sulfur content of 2300 ppm led to 80% desulfurization after 2 h. The processes used conciliate liquid-liquid extraction and sulfur oxidative catalysis. The catalytic performance of the commercial Keggin-polyoxomolybdate H 3 [PMo 12 O 40 ] (PMo 12) was strategically increased by simple cation exchange, using a long carbon chain (ODAPMo 12 , ODA = CH 3 (CH 2) 17 (CH 3) 3 N), and by its incorporation into the Metal-Organic Framework (MOF) NH 2-MIL-101(Cr), forming a new active heterogeneous PMo 12 @MOF composite catalyst. Activity of both catalysts was similar; however, the solid catalyst could be easily recovered and reused, and its stability was confirmed after multiple continuous cycles.

show abstract

“…Adsorptive deep desulphurization appears to hold promise and a number of sorbents starting from simple activated carbons 15 to π -complexation adsorbents, where Cu-Y and Ag-Y zeolites were shown to exhibit good capacity for thiophene sulphur removal from benzene and n-octane mixtures 3 16 . Recently, a more complex process by combining oxidation and extraction has been reported– extractive and catalytic oxidative desulphurization (ECOD) that employs catalyst for oxidation and suitable extractant for removing oxidised products as an alternative to the existing HDS process 17 18 . Acid treated activated carbons have also been considered to promote oxidation in oxidative desulphurization 19 .…”

mentioning

confidence: 99%

A Non-catalytic Deep Desulphurization Process using Hydrodynamic Cavitation

Suryawanshi

Bhandari

Sorokhaibam

et al. 2016

Sci Rep

View full text Add to dashboard Cite

A novel approach is developed for desulphurization of fuels or organics without use of catalyst. In this process, organic and aqueous phases are mixed in a predefined manner under ambient conditions and passed through a cavitating device. Vapor cavities formed in the cavitating device are then collapsed which generate (in-situ) oxidizing species which react with the sulphur moiety resulting in the removal of sulphur from the organic phase. In this work, vortex diode was used as a cavitating device. Three organic solvents (n-octane, toluene and n-octanol) containing known amount of a model sulphur compound (thiophene) up to initial concentrations of 500 ppm were used to verify the proposed method. A very high removal of sulphur content to the extent of 100% was demonstrated. The nature of organic phase and the ratio of aqueous to organic phase were found to be the most important process parameters. The results were also verified and substantiated using commercial diesel as a solvent. The developed process has great potential for deep of various organics, in general, and for transportation fuels, in particular.

show abstract

Deep oxidative desulfurization of dibenzothiophene using low-temperature-mediated titanium dioxide catalyst in ionic liquids

Cited by 64 publications

References 55 publications

Catalytic oxidative desulfurization of fuels in acidic deep eutectic solvents with [(C6H13)3P(C14H29)]3PMo12O40 as a catalyst

Catalytic oxidative desulfurization of fuels in acidic deep eutectic solvents with [(C6H13)3P(C14H29)]3PMo12O40 as a catalyst

Efficient Oxidative Desulfurization Processes Using Polyoxomolybdate Based Catalysts

A Non-catalytic Deep Desulphurization Process using Hydrodynamic Cavitation

Contact Info

Product

Resources

About