Lipophilic decavanadate supported by three-dimensional porous carbon nitride catalyst for aerobic oxidative desulfurization

Gu, Jinyang; Liu, Maogen; Xun, Suhang; He, Minqiang; Wu, Linlan; Zhu, Linhua; Wu, Xiangyang; Zhu, Wenshuai; Li, Huaming

doi:10.1016/j.mcat.2019.110709

Cited by 12 publications

(9 citation statements)

References 67 publications

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“…Table 9 displays a miscellaneous of other ODS systems, whereas Table 10 displays photocatalytic ODS systems. Similar to what was observed earlier, the developed surface area and the structure of pores in carbon materials, leading to well-dispersed active phases, were found as a critical contribution of carbon structures [114][115][116][117][118]. Xun et al (2020) [119] also highlighted the dispersion of TiO 2 over a graphite carbon (GC) as a relevant factor for the ODS of a simulated fuel (DBT, 4-methyldibenzothiophene (4-MDBT) and 4,6-DMDBT) dissolved in n-octane, [S] 0 = 500 ppm).…”

Section: Other Ods Systemssupporting

confidence: 85%

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

et al. 2021

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Sulfur (S) and nitrogen (N) are elements naturally found in petroleum-based fuels. S- and N-based compounds in liquid fuels are associated with a series of health and environmental issues. Thus, legislation has become stricter worldwide regarding their content and related emissions. Traditional treatment systems (namely hydrodesulfurization and hydrodenitrogenation) fail to achieve the desired levels of S and N contents in fuels without compromising combustion parameters. Thus, oxidative treatments (oxidative desulfurization–ODS, and oxidative denitrogenation-ODN) are emerging as alternatives to producing ultra-low-sulfur and nitrogen fuels. This paper presents a thorough review of ODS and ODN processes applying carbon-based materials, either in hybrid forms or as catalysts on their own. Focus is brought to the role of the carbonaceous structure in oxidative treatments. Furthermore, a special section related to the use of amphiphilic carbon-based catalysts, which have some advantages related to a closer interaction with the oily and aqueous phases, is discussed.

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Section: Other Ods Systemssupporting

confidence: 85%

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

et al. 2021

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“…That is to say, as a carrier, g-C 3 N 4 with high specific surface area is beneficial to the sufficient dispersion and full exposure of active sites, so as to enhance the catalytic performance effectively . For instance, a series of supported catalysts based on g-C 3 N 4 have been reported including H 3 PW 12 O 40 /mpg-C 3 N 4 , MoO 2 /g-C 3 N 4 , [(C 8 H 17 ) 3 NCH 3 ] 3 H 3 V 10 O 28 /3D g-C 3 N 4 , etc. − Recently, g-C 3 N 4 has been paid increasing attentions in catalytic oxidative desulfurization processes …”

Section: Introductionmentioning

confidence: 99%

Few Layer g-C₃N₄ Dispersed Quaternary Phosphonium Ionic Liquid for Highly Efficient Catalytic Oxidative Desulfurization of Fuel

Xun

et al. 2020

Energy Fuels

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Functionalized ionic liquids (ILs) have been considered as efficient catalysts for oxidative desulfurization (ODS), but the further industrial applications are hampered by the poor separability with oil phase after reaction and large dosage. In this work, few-layered graphitic carbon nitride (g-C 3 N 4 ) with high specific surface area was prepared via thermal oxidation and employed as a carrier to construct supported ionic liquid catalyst for ODS. A functional quaternary phosphonium ionic liquid [(C 6 H 13 ) 3 PC 14 H 29 ] 3 PMo 12 O 40 (abbreviated as C 14 PPMo) was synthesized and immobilized on g-C 3 N 4 . Then, the as-prepared samples were characterized by FT-IR, DRS, XRD, N 2 adsorption−desorption isotherm, XPS, SEM, and TEM, systematically. It was found that few layer g-C 3 N 4 had a large specific surface area (194.89 m 2 g −1 ), which was conducive to the high dispersion of C 14 PPMo IL. The obtained support catalyst C 14 PPMo/g-C 3 N 4 exhibited outstanding catalytic ability on the oxidation of dibenzothiophene (DBT), and the desulfurization efficiency could reach 100% with a small dosage of IL under optimal conditions. The oxidative products of DBT and 4,6-dimethyldibenzothiophene (4,6-DMDBT) were the homologous sulfones and proved by GC-MS, and the proposed reaction processes were studied, respectively. Since the supported IL was a heterogeneous catalyst and no additional solvent was added, C 14 PPMo IL could be separated and repossessed readily after the reaction. Moreover, the recycle ability of C 14 PPMo/g-C 3 N 4 on the oxidation of both DBT and 4,6-DMDBT were investigated simultaneously, and both of the desulfurization activities could still remain above 90% after 6 times cycling.

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“…In 2020, Gu et al [98] synthesized a three-dimensional (3D) porous g-C 3 N 4 supported vanadium-based heterogeneous catalyst (V-IL/3D g-C 3 N 4 ) by a simple solvothermal method. The as-prepared g-C 3 N 4 carrier has a rich 3D pore structure, which was beneficial to the high dispersion of active center, while the mesoporous g-C 3 N 4 can adsorb sulfur compounds and enhance the mass transfer of reaction.…”

Section: Porous Carbon Nitridementioning

confidence: 99%

A Short Review of Aerobic Oxidative Desulfurization of Liquid Fuels over Porous Materials

Yuan

Sun

2022

Catalysts

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Oxidative desulfurization (ODS) has attracted much attention owing to the mild working conditions and effective removal of the aromatic sulfur-containing compounds which are difficult to desulfurize using the industrial hydrodesulfurization (HDS) technique. Molecular oxygen in ambient air have been recognized as an ideal oxidant in ODS due to its easy availability, non-toxicity and low cost in recent years. However, molecular oxygen activation under mild operating conditions is still a challenge. Porous materials and their composites have drawn increasing attention due to their advantages, such as high surface area and confined pore space, along with their stability. These merits contribute to the fast diffusion of oxygen molecules and the formation of more exposed active sites, which make them ideal catalysts for aerobic oxidation reactions. The confined space pore size offers a means of catalytic activity and durability improvement. This gives rise to copious attention toward the porous catalysts in AODS. In this review, the progress in the characteristics and AODS catalytic activities of porous catalysts is summarized. Then, emphasis on the molecular oxygen activation mechanism is traced. Finally, the breakthroughs and challenges of various categories of porous catalysts are concluded.

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Lipophilic decavanadate supported by three-dimensional porous carbon nitride catalyst for aerobic oxidative desulfurization

Cited by 12 publications

References 67 publications

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Few Layer g-C₃N₄ Dispersed Quaternary Phosphonium Ionic Liquid for Highly Efficient Catalytic Oxidative Desulfurization of Fuel

A Short Review of Aerobic Oxidative Desulfurization of Liquid Fuels over Porous Materials

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Lipophilic decavanadate supported by three-dimensional porous carbon nitride catalyst for aerobic oxidative desulfurization

Cited by 12 publications

References 67 publications

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Few Layer g-C3N4 Dispersed Quaternary Phosphonium Ionic Liquid for Highly Efficient Catalytic Oxidative Desulfurization of Fuel

A Short Review of Aerobic Oxidative Desulfurization of Liquid Fuels over Porous Materials

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Few Layer g-C₃N₄ Dispersed Quaternary Phosphonium Ionic Liquid for Highly Efficient Catalytic Oxidative Desulfurization of Fuel