Cellulose nanocrystal shelled with poly(ionic liquid)/polyoxometalate hybrid as efficient catalyst for aerobic oxidative desulfurization

Yang, Huawei; Zhang, Qing; Zhang, Jinhao; Yang, Lixia; Ma, Zihao; Wang, Li; Li, Hongguo; Bai, Liangjiu; Wei, Daming; Wang, Wenxiang; Hou, Chen

doi:10.1016/j.jcis.2019.07.036

Cited by 67 publications

(19 citation statements)

References 55 publications

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“…Each skeleton of the metal atom is bonded to two terminal oxygen atoms, which provide high catalytic activity in oxidation reactions of sulfur substrates. The relevance of the use of catalysts based on polyoxometalate of the Anderson type for aerobic oxidative desulfurization was shown. − We previously reported that the combination of a quaternary ammonium cation and an Anderson-type polyanion makes it possible to synthesize a highly active catalyst for aerobic oxidative desulfurization, in the presence of which the complete removal of DBT from the hydrocarbon medium is achieved within 60 min at 120 °C and a catalyst dosage of 0.06 wt % . However, despite the demonstration of a high catalytic activity, the use of solid POMs as heterogeneous catalysts is ineffective due to its low surface area (<10 m 2 /g), the complexity of separation and reuse, and good solubility in polar solvents, which leads to the leaching of catalytically active sites. , To overcome the limitations and improve the catalytic properties, the active components were immobilized on supports.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Catalysts Containing an Anderson-Type Polyoxometalate for the Aerobic Oxidation of Sulfur-Containing Compounds

Eseva

Lukashov

Cherednichenko

et al. 2021

Ind. Eng. Chem. Res.

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New highly efficient heterogeneous catalysts based on an immobilized Anderson-type polyoxometalate supported on the functionalized SBA-15 surface have been successfully synthesized and characterized by FT-IR, XRD, N 2 adsorption−desorption isotherms, BET, SEM, TEM, EDX, and XPS analyses. The catalytic activity was investigated in the aerobic oxidative desulfurization of a model fuel. Heterogeneous catalysts were synthesized by various methods of immobilization using organic fragments of different natures. An efficient method of immobilization based on the grafting of N-methylimidazole as a cation-forming agent has been shown. The effect of temperature, dosage, and active phase loading on the conversion of dibenzothiophene (DBT) was studied. The highest activity was shown by the CoMo-0.5IL-SBA catalyst (IL = 1-methyl-3-(trimethoxysilylpropyl)-imidazolium cation), in the presence of which 100% DBT removal is achieved within 90 min at 120 °C at a catalyst amount of 0.2 wt %. Moreover, the immobilized catalyst could be recycled 5 times without a significant loss of catalytic activity.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous Catalysts Containing an Anderson-Type Polyoxometalate for the Aerobic Oxidation of Sulfur-Containing Compounds

Eseva

Lukashov

Cherednichenko

et al. 2021

Ind. Eng. Chem. Res.

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“…To increase the stability, active sites, and the specific surface area of a catalyst, a series of solvent-free supported MILs combined with oxygen as the oxidant, such as MoOx/MC-600, CNC@PIL@POM, or [(C 8 H 17 ) 3 NCH 3 ] 3 PMo 12 O 40 @γ-Fe 2 O 3 @SiO 2 @mSiO 2 , have been designed for ODS of organic sulfide in recent years. − During the ODS process, sulfur compounds are first extracted on the IL interface of supported MILs and then oxidized by oxygen (Figure c). Jiang et al designed a novel MoOx/MC-600 catalyst with polyoxometalate-based poly(ionic liquid) as a precursor for aerobic oxidation of organic sulfide, which can be easily separated by a magnet.…”

Section: Oxidative Desulfurization Of Organic Sulfide In Milsmentioning

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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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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“…ODS with O 2 is also called aerobic ODS (AODS). Up to now, a wide variety of catalysts, such as polyoxometalates, − ionic liquids, mixed metal oxides (MMOs), , two-dimensional materials, − and other hybrid materials, − have been proposed for AODS. Among them, molybdenum-containing MMOs which possess advantages of cheap affordability, excellent stability, and tunable structure are the most promising catalysts for industrial application .…”

Section: Introductionmentioning

confidence: 99%

Morphology-Controlled Construction and Aerobic Oxidative Desulfurization of Hierarchical Hollow Co–Ni–Mo–O Mixed Metal-Oxide Nanotubes

Liu

Han

Zhang

et al. 2020

Ind. Eng. Chem. Res.

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O2 activation for the green conversion of chemicals has attracted a great deal of attentions in the field of chemistry. Developing catalysts for aerobic oxidation with both prominent instinct activity and desirable micro/nanostructure remains a tough challenge. In this work, hierarchical hollow Co–Ni–Mo–O mixed metallic-oxide nanotubes constructed by ultrathin CoMoO4/NiMoO4 nanosheets were fabricated using a sacrificial template method and employed as catalysts in aerobic oxidative desulfurization (AODS) of a model fuel. With air as the oxygen source, the catalyst demonstrated surprisingly high activity by achieving complete conversion of dibenzothiophene under mild reaction conditions. Besides, the catalyst demonstrated excellent stability on continuous repeated use. A further mechanism study reveals the electron coordination and transfer between different metal species as well as the activation route of O2. Based on the above-mentioned results, the catalyst which allows a good exposure of metal centers, a high concentration of oxygen vacancies, and the desired electronic structure is expected to serve as the high-performance AODS catalyst.

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Cellulose nanocrystal shelled with poly(ionic liquid)/polyoxometalate hybrid as efficient catalyst for aerobic oxidative desulfurization

Cited by 67 publications

References 55 publications

Heterogeneous Catalysts Containing an Anderson-Type Polyoxometalate for the Aerobic Oxidation of Sulfur-Containing Compounds

Heterogeneous Catalysts Containing an Anderson-Type Polyoxometalate for the Aerobic Oxidation of Sulfur-Containing Compounds

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

Morphology-Controlled Construction and Aerobic Oxidative Desulfurization of Hierarchical Hollow Co–Ni–Mo–O Mixed Metal-Oxide Nanotubes

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