Boosting oxidative desulfurization of model fuel by POM-grafting ZIF-8 as a novel and efficient catalyst

Ghahramaninezhad, Mahboube; Pakdel, F.; Shahrak, Mahdi Niknam

doi:10.1016/j.poly.2019.05.058

Cited by 42 publications

(23 citation statements)

References 36 publications

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“…Besides the use of POMs encapsulated in the cages of MOFs, some POMs have been covered on the surface of MOFs to achieve core-shell structured hybrid materials for oxidation reactions [46,93]. For example, PW 12 was loaded onto the ZIF-8 surface to obtain a core-shell catalyst for the oxidation of benzyl alcohol.…”

Section: Oxidation Reactionmentioning

confidence: 99%

POM@MOF Hybrids: Synthesis and Applications

et al. 2020

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The hybrid materials that are created by supporting or incorporating polyoxometalates (POMs) into/onto metal–organic frameworks (MOFs) have a unique set of properties. They combine the strong acidity, oxygen-rich surface, and redox capability of POMs, while overcoming their drawbacks, such as difficult handling, a low surface area, and a high solubility. MOFs are ideal hosts because of their high surface area, long-range ordered structure, and high tunability in terms of the pore size and channels. In some cases, MOFs add an extra dimension to the functionality of hybrids. This review summarizes the recent developments in the field of POM@MOF hybrids. The most common applied synthesis strategies are discussed, together with major applications, such as their use in catalysis (organocatalysis, electrocatalysis, and photocatalysis). The more than 100 papers on this topic have been systematically summarized in a handy table, which covers almost all of the work conducted in this field up to now.

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Section: Oxidation Reactionmentioning

confidence: 99%

POM@MOF Hybrids: Synthesis and Applications

et al. 2020

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“…At the beginning of the reaction, the use of H 2 O 2 and CH 3 COOH causes the in situ production of organic peracid molecules (CH 3 CO 3 H), which can effectively activate the catalytic sites of (Gly) 3 PMo 12 O 40 . Next, the oxygen can be transferred from CH 3 CO 3 H to the terminal Mo = O t bonds in the structure of Keggin‐type [PMo 12 O 40 ] −3 anions, making oxoperoxo‐Mo complexes 6,38 …”

Section: Resultsmentioning

confidence: 99%

“…As a type of solid carrier, metal oxides are considered promising materials to help the process of heterogenization of POMs due to their environmental‐friendly features and steadiness, and accelerating the fabrication process in a shielded way, and the fact that they decrease the cost of the process. Examples of such metal oxide carriers include Al 2 O 3 , 35 TiO 2 , 36 NiO, 37 PbO, 31 and CuO 38 . A careful literature survey demonstrated that there were few studies about the use of metal ferrites nanoparticles, MFe 2 O 4 (where M = a divalent metal ion), for the immobilization of Keggin‐type POMs in Cat‐ODS reactions 39 …”

Section: Introductionmentioning

confidence: 99%

Synthesis of (Gly) ₃ PMo ₁₂ O ₄₀ @ MnFe ₂ O ₄ organic/inorganic hybrid nanocomposite as an efficient and magnetically recoverable catalyst for oxidative desulfurization of liquid fuels

Rezvani

Khandan

Rahim

2021

Intl J of Energy Research

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Summary Here, we report on the preparation and characterization of a new organic/inorganic hybrid nanocomposite comprised of the glycine‐modified polyoxomolybdate (abbreviated as (Gly)3PMo12O40) and manganese ferrite (MnFe2O4) nanoparticles. The hybrid nanocomposite was successfully synthesized under mild ultrasound irradiation and characterized by powder X‐ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscope, energy dispersive X‐ray, and vibrating sample magnetometer techniques. To explore the (Gly)3PMo12O40@MnFe2O4 applicability, it was used in catalytic oxidative desulfurization (Cat‐ODS) reactions. The experimental results revealed excellent catalytic activity of the hybrid nanocomposite in the removal of hazardous organosulfur compounds from model fuel oils (MFOs) and typical real gasoline. The sulfur removal from MFOs could reach up to 95% at the operating temperature of 35°C, the ambient pressure, and the contact time of 1 hour. Quite surprisingly, the total sulfur content of real gasoline was lowered from 0.4985 to 0.0198 wt% under the same reaction conditions. In addition, the (Gly)3PMo12O40@MnFe2O4 presented a brilliant magnetically reusability with slight diminution after seven consecutive Cat‐ODS cycles. These results encourage the further exploration of the application of (Gly)3PMo12O40@MnFe2O4 organic/inorganic hybrid nanocomposite in the production of clean diesel and jet fuels.

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“…Recently, however, a large POM, Mo 132 , has been heterogenized on the periphery of ZIF-8 to improve the efficiency of DBT oxidation (Figure 13). 196 The superiority of the composite catalyst was attributed to synergy at the interface of the Mo and Zn. With the rise of mesoporous MOF structures, installing large POMs within MOFs is now possible.…”

Section: ■ Conclusion and Future Directions In Pom@mof Catalysismentioning

confidence: 99%

Section: Conclusion and Future Directions In Pom@mof Catalysismentioning

confidence: 99%

Strategies for Incorporating Catalytically Active Polyoxometalates in Metal–Organic Frameworks for Organic Transformations

Buru

Farha

2020

ACS Appl. Mater. Interfaces

133

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Polyoxometalates (POMs) can benefit from immobilization on solid supports to overcome their difficulty in processability and stability. Among the reported solid supports, metal–organic frameworks (MOFs) offer a crystalline, versatile platform for depositing highly active POMs. The combination of these structures can at times benefit from the combined reactivity of both the POM and MOF, sometimes synergistically, to improve catalysis while balancing desirable properties like porosity, substrate diffusion, or stability. In this Review, we survey the strategies for immobilizing POMs within MOF structures, with an emphasis on how physical and catalytic properties of the parent materials are affected in the composite when employed in organic transformations.

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Boosting oxidative desulfurization of model fuel by POM-grafting ZIF-8 as a novel and efficient catalyst

Cited by 42 publications

References 36 publications

POM@MOF Hybrids: Synthesis and Applications

POM@MOF Hybrids: Synthesis and Applications

Synthesis of (Gly) ₃ PMo ₁₂ O ₄₀ @ MnFe ₂ O ₄ organic/inorganic hybrid nanocomposite as an efficient and magnetically recoverable catalyst for oxidative desulfurization of liquid fuels

Strategies for Incorporating Catalytically Active Polyoxometalates in Metal–Organic Frameworks for Organic Transformations

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Boosting oxidative desulfurization of model fuel by POM-grafting ZIF-8 as a novel and efficient catalyst

Cited by 42 publications

References 36 publications

POM@MOF Hybrids: Synthesis and Applications

POM@MOF Hybrids: Synthesis and Applications

Synthesis of (Gly) 3 PMo 12 O 40 @ MnFe 2 O 4 organic/inorganic hybrid nanocomposite as an efficient and magnetically recoverable catalyst for oxidative desulfurization of liquid fuels

Strategies for Incorporating Catalytically Active Polyoxometalates in Metal–Organic Frameworks for Organic Transformations

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Synthesis of (Gly) ₃ PMo ₁₂ O ₄₀ @ MnFe ₂ O ₄ organic/inorganic hybrid nanocomposite as an efficient and magnetically recoverable catalyst for oxidative desulfurization of liquid fuels