Application of CeO2-V2O5 catalysts in the oxidative desulfurization of 4,6-dimethyl dibenzothiophene as a model reaction to remove sulfur from fuels

Manríquez-Ramírez, Ma. Elena; Valdez, Martín Trejo; Castro, Laura V.; Flores, Miriam Estrada; Ortiz-Islas, Emma

doi:10.1016/j.materresbull.2022.111864

Cited by 7 publications

(3 citation statements)

References 34 publications

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“…Application of V 2 O 5 photocatalytic materials is not limited to the photodegradation of dyes. It is of great significance to explore the wide range of applications where V 2 O 5 photocatalytic materials have been utilized, including pollutant degradation, 40 water splitting, 41,42 CO 2 reduction, 43–45 and organic synthesis, 46–48 and others.…”

Section: Modification Methodsmentioning

confidence: 99%

“…For instance, the asprepared Ag and ZnO co-doped V 2 O 5 composites were employed in the photodegradation of Congo red dye under visible irradiation at ambient temperature, 38 which took advantage of both semiconductor recombination and noble metal deposition to increase the photocatalytic activity of pure 39 Application of V 2 O 5 photocatalytic materials is not limited to the photodegradation of dyes. It is of great signicance to explore the wide range of applications where V 2 O 5 photocatalytic materials have been utilized, including pollutant degradation, 40 water splitting, 41,42 CO 2 reduction, [43][44][45] and organic synthesis, [46][47][48] and others.…”

Section: Othersmentioning

confidence: 99%

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Research progress of vanadium pentoxide photocatalytic materials

Chen

Duan

et al. 2023

RSC Adv.

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Section: Modification Methodsmentioning

confidence: 99%

Section: Othersmentioning

confidence: 99%

Research progress of vanadium pentoxide photocatalytic materials

Chen

Duan

et al. 2023

RSC Adv.

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“…The catalysts for ODS mainly include polyoxometalates [7] and their composite materials [8], titanium-containing molecular sieves [2,9], transition metal oxides [3,[9][10][11][12][13], and so on. Among them, WO 3 -based heterogeneous catalysts [3,12,13] are favored by researchers for their excellent desulfurization performance.…”

Section: Introductionmentioning

confidence: 99%

The Green Preparation of Mesoporous WO3/SiO2 and Its Application in Oxidative Desulfurization

Zhang,

Liu,

Zhao

et al. 2024

Catalysts

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Recently, supported WO3-based catalysts have been widely used in oxidative desulfurization (ODS) due to their advantages of easy separation, high activity, and being environment-friendly. In this work, supported mesoporous WO3/SiO2 catalysts have been prepared using an incipient-wetness impregnation method with agricultural waste rice husks as both a silicon source and mesoporous template, and phosphotungstic acid as a tungsten source. The effects of different calcination temperatures and WO3 loadings on the ODS performance of samples are studied, and the appropriate calcination temperature and WO3 loading are 923 K and 15.0 wt.%, respectively. The relevant characterization results show that, compared with pure WO3, the specific surface area and mesopore volume of WO3/SiO2 samples are greatly increased. Due to (a) high WO3 loading, (b) high specific surface area, and (c) nanoscale WO3 grains uniformly dispersed on the surface of the mesoporous SiO2 carrier, active sites of WO3/SiO2 catalysts are greatly increased, and their catalytic activities are improved. After the sixth and eighth runs in the ODS of dibenzothiophene and 4,6-dimethyldibenzothiophene, respectively, the WO3/SiO2 catalyst still maintains high catalytic activity (>99.0%) despite the presence of a partial loss of WO3. In addition, with the aid of the UV-Vis technique, the tungsten-peroxo species, the active intermediates in the ODS reaction catalyzed by the WO3/SiO2 catalyst, are captured. Finally, a possible mechanism for the ODS of bulky organic sulfides using the WO3/SiO2 catalyst is proposed.

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Synthesis and characterization of V2O5-Ga2O3 photocatalysts and their application on the photocatalytic reduction of CO2

Espinosa

Manríquez

Trejo-Valdéz

et al. 2023

Environ Sci Pollut Res

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The photocatalytic reduction of carbon dioxide (CO 2 ) to produce methanol (CH 3 OH) is a promising strategy for clean energy generation. The catalyst, the aqueous medium, and the UV light are essential parameters for the most relevant pair formation (e − /h + ) and a speci c selectivity towards the desired product (methanol). The use of G 2 O 3 and V 2 O 5 in the photocatalytic reduction of CO 2 to obtain methanol has been little studied. However, the combination of these oxides is important to generate synergies and decrease the band energy, enhancing the photocatalytic activity in the reduction of CO 2 . In this work, combined V 2 O 5 -Ga 2 O 3 photocatalysts were obtained and studied in the photocatalytic reduction of CO 2 .The photocatalysts were characterized by spectroscopic and microscopic techniques. The results showed that textural properties, such as surface area and morphology, do not in uence photocatalytic activity.However, species identi ed by XPS such as Ga2p 3/2 and Ga2p 1/2 improved the photocatalytic activity, probably due to the formation of vacancies and the bandgap reduction of the combined oxides, in comparison with the single oxides. The contribution of these factors to the interactions of (e − /h + ) pairs with CO 2 to generate methanol is demonstrated.

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Application of CeO2-V2O5 catalysts in the oxidative desulfurization of 4,6-dimethyl dibenzothiophene as a model reaction to remove sulfur from fuels

Cited by 7 publications

References 34 publications

Research progress of vanadium pentoxide photocatalytic materials

Research progress of vanadium pentoxide photocatalytic materials

The Green Preparation of Mesoporous WO3/SiO2 and Its Application in Oxidative Desulfurization

Synthesis and characterization of V2O5-Ga2O3 photocatalysts and their application on the photocatalytic reduction of CO2

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