Oxidative Desulfurization of Dibenzothiophene Catalyzed by VO(acac)<sub>2</sub>in Ionic Liquids at Room Temperature

Zhu, Wenshuai; Xu, Dan; Li, H.; Ding, Yun; Zhang, M.; Liu, H.; Chao, Yanhong

doi:10.1080/10916466.2010.545790

Cited by 13 publications

(5 citation statements)

References 19 publications

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“…Because of the hydrophobic cations and hydrophilic anions of POM-ILs, pure POM-ILs could form a self-emulsification system for ODS. For example, [(C 6 H 13 ) 3 PC 14 H 29 ] 2 W 6 O 19 , [( n -C 8 H 17 ) 3 NCH 3 ] 3 [PMoO], and [C 16 mim][PyW] have been designed as both the extractant and catalyst to construct solvent-free ODS of aromatic sulfur compounds with the presence of H 2 O 2 . The ODS process and mechanism are similar to the three-liquid-phase system, and the ILs loss is largely reduced.…”

Section: Oxidative Desulfurization Of Organic Sulfide In Milsmentioning

confidence: 99%

“…93,94 In addition, polyethylene glycol dimethyl ether (NHD) is a commercial commonly used neutral solvent, which exhibits excellent solubility, nonflammability, and nontoxicity. Zhang et al 95 97 have been designed as both the extractant and catalyst to construct solvent-free ODS of aromatic sulfur compounds with the presence of H 2 O 2 . The ODS process and mechanism are similar to the three-liquid-phase system, and the ILs loss is largely reduced.…”

Section: T H I S C O N T E N T Imentioning

confidence: 99%

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Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Fen

Qazi

et al. 2021

Environ. Sci. Technol.

121

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Ionic liquids (ILs) as novel functional desulfurization materials have attracted increasing attentions. Metal-based ionic liquids (MILs) are classified into three types of metal chloride ILs, metal oxide ILs, and metal complex ILs based on the definition and basic structure of MILs in this critical review. On the basis of the properties of ILs such as structure designability, super dissolution performance, good thermal and chemical stability, nonflammability, and wide electrochemical window, MILs exhibit unique advantages on hydrophobicity, oxidation performance, and Bronsted−Lewis acidity. Therefore, MILs possess both the absorption and oxidation centers for the intramolecular adsorption and oxidation to improve the oxidative desulfurization (ODS) process. During the novel nonaqueous wet oxidative desulfurization process (Nasil), H 2 S can be oxidized into elemental sulfur with hydrophobic MILs, which can be regenerated by oxygen for recycle, to solve the problems of low sulfur capacity, low sulfur quality, and severe secondary pollution in the aqueous Lo-Cat wet oxidative desulfurization process. Another outstanding feature of MILs in ODS is biomimetic catalysis, which has the function of activating molecular oxygen and improving the oxidation performance. Metal oxide ILs and metal complex ILs are used in combination with hydrogen peroxide or oxygen with the existing water to generate a Fenton-like reaction to convert hydrophobic organic sulfur or SO 2 into hydrophilic sulfoxide/sulfone or sulfur acid, respectively. However, the corrosion of Cl − to the equipment and emulsification phenomenon in the extraction process of sulfoxide/sulfone separation still need further study. Furthermore, the promising strategies to construct highly efficient and green desulfurization processes for large-scale applications are provided.

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Section: Oxidative Desulfurization Of Organic Sulfide In Milsmentioning

confidence: 99%

Section: T H I S C O N T E N T Imentioning

confidence: 99%

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Fen

Qazi

et al. 2021

Environ. Sci. Technol.

121

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“…Vanadium and rhenium compounds have also been examined as catalysts in ILs for oxidative desulfurization. 52,82,83 optimal conditions, the removal of DBT from model oil could reach 94.3%.…”

Section: Oxidative Desulfurizationmentioning

confidence: 99%

“…Vanadium and rhenium compounds have also been examined as catalysts in ILs for oxidative desulfurization. ,, Mota et al employed the acetylacetonate complexes of oxovanadium(IV) VO(X-acac) 2 (X = Cl, CH 3 , or CH 3 CH 2 ) as catalysts in ILs for oxidative desulfurization with H 2 O 2 . It was observed that over 95% conversion of BT and DBT to sulfones was achieved in [BMIM][Tf 2 N]; however, in [BMIM][TfO] and [BMIM][BF 4 ] the conversion was moderate, which may be due to the higher coordinating ability of these two anions than [Tf 2 N].…”

Section: Oxidation Of Sulfidesmentioning

confidence: 99%

“…It was observed that over 95% conversion of BT and DBT to sulfones was achieved in [BMIM][Tf 2 N]; however, in [BMIM][TfO] and [BMIM][BF 4 ] the conversion was moderate, which may be due to the higher coordinating ability of these two anions than [Tf 2 N]. Zhu et al also investigated the catalytic activity of VO(acac) 2 in [BMIM][BF 4 ], achieving 99.6% DBT removal in 2 h.…”

Section: Oxidation Of Sulfidesmentioning

confidence: 99%

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Ionic Liquids in Selective Oxidation: Catalysts and Solvents

et al. 2017

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Selective oxidation has an important role in environmental and green chemistry (e.g., oxidative desulfurization of fuels and oxidative removal of mercury) as well as chemicals and intermediates chemistry to obtain high-value-added special products (e.g., organic sulfoxides and sulfones, aldehydes, ketones, carboxylic acids, epoxides, esters, and lactones). Due to their unique physical properties such as the nonvolatility, thermal stability, nonexplosion, high polarity, and temperature-dependent miscibility with water, ionic liquids (ILs) have attracted considerable attention as reaction solvents and media for selective oxidations and are considered as green alternatives to volatile organic solvents. Moreover, for easy separation and recyclable utilization, IL catalysts have attracted unprecedented attention as "biphasic catalyst" or "immobilized catalyst" by immobilizing metal- or nonmetal-containing ILs onto mineral or polymer supports to combine the unique properties of ILs (chemical and thermal stability, capacity for extraction of polar substrates and reaction products) with the extended surface of the supports. This review highlights the most recent outcomes on ILs in several important typical oxidation reactions. The contents are arranged in the series of oxidation of sulfides, oxidation of alcohols, epoxidation of alkenes, Baeyer-Villiger oxidation reaction, oxidation of alkanes, and oxidation of other compounds step by step involving ILs as solvents, catalysts, reagents, or their combinations.

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Sustainable Homogeneous Catalytic Oxidative Processes for the Desulfurization of Fuels

Sabuzi,

Pomarico,

Galloni

et al. 2024

Catalysis for a Sustainable Environment

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Oxidative Desulfurization of Dibenzothiophene Catalyzed by VO(acac)₂in Ionic Liquids at Room Temperature

Cited by 13 publications

References 19 publications

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Ionic Liquids in Selective Oxidation: Catalysts and Solvents

Sustainable Homogeneous Catalytic Oxidative Processes for the Desulfurization of Fuels

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Oxidative Desulfurization of Dibenzothiophene Catalyzed by VO(acac)2in Ionic Liquids at Room Temperature

Cited by 13 publications

References 19 publications

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Metal-Based Ionic Liquids in Oxidative Desulfurization: A Critical Review

Ionic Liquids in Selective Oxidation: Catalysts and Solvents

Sustainable Homogeneous Catalytic Oxidative Processes for the Desulfurization of Fuels

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Product

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Oxidative Desulfurization of Dibenzothiophene Catalyzed by VO(acac)₂in Ionic Liquids at Room Temperature