Mixing-assisted oxidative desulfurization of model sulfur compounds using polyoxometalate/H2O2 catalytic system

Choi, Angelo Earvin Sy; Roces, Susan A.; Dugos, Nathaniel P.; Wan, Meng

doi:10.1016/j.serj.2015.11.005

Cited by 48 publications

(24 citation statements)

References 30 publications

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“…[128][129][130][131][132][133][134][135] Typically, POMs are cluster form materials belonging to the metal oxide family, which is comprised of numerous transition metal oxoanions and oxygen atoms, frequently with heteroatoms. 136 In regard to their structure, POMs can be classified into several types, including Anderson-Evans, 134 Keggin, 133,[137][138][139] Dawson 140 and so forth, which respectively possess the coordination of a single heteroatom surrounded by 6 transition metal atoms ([XM 6 O 24 ] nÀ ), 141 one heteroatom surrounded by 12 transition metal atoms ([XM 12 O 40 ] nÀ ) 140 and two heteroatoms surrounded by 18 transition metal atoms ([X 2 M 18 O 62 ] nÀ ). 140 Among the POM types, Keggin-based POMs have been popularly investigated in ODS by previous researchers on account of their superiority in industrial applicability, thermal resistance and simplicity of synthesis procedures.…”

Section: Application Of Polyoxometalates (Poms) In Odsmentioning

confidence: 99%

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

Lim

Ong

2021

Nanoscale Horiz.

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Section: Application Of Polyoxometalates (Poms) In Odsmentioning

confidence: 99%

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

Lim

Ong

2021

Nanoscale Horiz.

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“…For all these reasons, ultrasound assisted ODS process appears promising for sulfur removal. Nevertheless, the application of ultrasound assisted oxidative desulfurization (UAOD) has been lately (after 2011) reported in the literature for low sulfur light gas oil (<0.22 wt.%S) [92][93][94][95] as well as model feedstock (S < 1000 ppm) [69,96,97].…”

Section: Ultrasound Technologymentioning

confidence: 99%

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

et al. 2018

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The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur is found in bulky thiophenic structures difficult to remove using conventional high pressure hydrodesulfurization process. However they appeared more reactive in oxidative desulfurization (ODS) process, carried out at mild conditions without hydrogen pressure. This review focuses for the first time on the heavy fuels initially containing more than 0.5 wt.%S and upgraded by the ODS process. Different attractive approaches of the literature towards ODS are reported using homogeneous and heterogeneous catalysis. Recent developments in ODS assisted with ultrasound technology and the use of ionic liquid to enhance ODS efficiency will be fully detailed and discussed to better understand their viability when applied to high sulfur content, high viscosity, and high boiling point feeds.

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“…Among the developed desulfurization technologies, oxidative desulfurization is widely studied as the most promising process because of its mild reaction conditions and good desulfurization effect [ 2 ]. In this approach, heteropoly acids such as phosphotungstate decompose in the presence of excessive hydrogen peroxide into a peroxide metal complex W(O 2 ) n , providing an active site for oxidative desulfurization [ 3 , 4 ]. For catalyst separation and recycling, it is desirable to load the heteropoly acids onto support materials [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Oxidative Desulfurization Catalyzed by Phosphotungstic Acid Supported on Hierarchical Porous Carbons

Wang

Kang

2021

Nanomaterials

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A hierarchical porous carbon material (HPC) with an ultra-high specific surface area was synthesized with sisal fiber (SF) as a precursor, and then H3PW12O40•24H2O (HPW) was immobilized on the support of SF−HPC by a simple impregnation method. A series characterization technology approved that the obtained SF−HPC had a high surface area of 3152.46 m2g−1 with micropores and macropores. HPW was well-dispersed on the surface of the SF−HPC support, which reduced the loading of HPW to as low as 5%. HPW/SF-HPW showed excellent catalytic performance for oxidative desulfurization, and the desulfurization rate reached almost 100% under the optimal reaction conditions. The desulfurization rate of HPW/SF-HPW could be maintained at above 94% after four recycles.

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Mixing-assisted oxidative desulfurization of model sulfur compounds using polyoxometalate/H2O2 catalytic system

Cited by 48 publications

References 30 publications

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Oxidative Desulfurization Catalyzed by Phosphotungstic Acid Supported on Hierarchical Porous Carbons

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