Mono lacunary phosphomolybdate supported on mesoporous graphitic carbon nitride: An eco-friendly and efficient catalyst for oxidative desulfurization of the model and real fuels

Moeinifard, Behzad; Chermahini, Alireza Najafi

doi:10.1016/j.jece.2021.105430

Cited by 19 publications

(6 citation statements)

References 53 publications

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“…However, the crystallinity decreased, and the catalyst demonstrated an amorphous nature, probably due to the surface modification of the lacunary compound. 47 Thermogravimetric analysis (TGA/DTG) is a brilliant technique to determine the thermal stability of the prepared catalyst, depicted in Figure 5. The sample was heated from ambient temperature to 700 °C at a rate of 10 °C•min −1 under static air.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Moreover, a lacunary semicrystalline nature is depicted at about 25–35°. , After preparing the LPMo-Cu catalyst (Figure b), it can be seen that the general structure is preserved due to the observation of some small peaks on the broad ones. However, the crystallinity decreased, and the catalyst demonstrated an amorphous nature, probably due to the surface modification of the lacunary compound …”

Section: Resultsmentioning

confidence: 99%

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Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

2023

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Lacunary polyoxometalates (LPOMs), a class of anionic metal oxide clusters, are promising materials as catalysts, photocatalysts, and electrocatalysts. Designing and functionalizing this type of compound are key factors for the discovery and development of novel materials. Herein, a new lacunary polyoxometalate-based compound was designed as a heterogeneous catalyst, prepared through functionalization of a lacunary Keggin-type polyoxometalate, i.e., [PMo11O39]7–, with 3-aminopropyltrimethoxysilane (APTS) and 2-pyridine carboxaldehyde. Subsequent reactions of this compound with Cu2+ ions led to the desired catalyst, LPMo-Cu. The catalytic activity of the obtained LPMo-Cu was examined in nitroarene reduction using sodium borohydride as a reducing agent in aqueous solution. It was specified that the synthesized LPMo-Cu exhibits high catalytic efficiency in the reduction of a wide variety of nitroarenes in a short time (5 min). Furthermore, the stability and recoverability of the prepared material were proved as a result of four consecutive reduction cycles without a significant decrease in its efficiency.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

2023

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“…Graphite carbon nitride (g-C 3 N 4 ), the most stable allotrope of carbon nitrides, which is widely used for photocatalysis, was also studied as support for immobilization of POMs and metal oxides for the development of NCs. The advantages of this carrier are its high chemical and reasonable thermal stability, its two-dimensional layered structure, and high availability of precursors [73][74][75]80,81]. It can be synthesized using the thermal polymerization of melamine, dicyandiamide, urea, etc., in a one-step process.…”

Section: Components For the Formation Of Nanostructured Catalysts Oxidants And Extractants For Oxidative Desulfurization Of Liquid Fuelsmentioning

confidence: 99%

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

et al. 2021

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In this paper, the current advantages and disadvantages of using metal-containing nanocatalysts (NCs) for deep chemical oxidative desulfurization (ODS) of liquid fuels are reviewed. A similar analysis is performed for the oxidative biodesulfurization of oil along the 4S-pathway, catalyzed by various aerobic bacterial cells of microorganisms. The preferences of using NCs for the oxidation of organic sulfur-containing compounds in various oil fractions seem obvious. The text discusses the development of new chemical and biocatalytic approaches to ODS, including the use of both heterogeneous NCs and anaerobic microbial biocatalysts that catalyze the reduction of chemically oxidized sulfur-containing compounds in the framework of methanogenesis. The addition of anaerobic biocatalytic stages to the ODS of liquid fuel based on NCs leads to the emergence of hybrid technologies that improve both the environmental characteristics and the economic efficiency of the overall process. The bioconversion of sulfur-containing extracts from fuels with accompanying hydrocarbon residues into biogas containing valuable components for the implementation of C-1 green chemistry processes, such as CH4, CO2, or H2, looks attractive for the implementation of such a hybrid process.

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“…Recently, nitrogen‐based carbon materials such as nitrogen‐doped carbon nanotubes have developed to use as base catalysts in organic reactions 20 ; however, the catalytic activity of these materials was not significant. Among several carbon‐nitrogen based materials, graphitic carbon nitrogen (g‐C 3 N 4 ) have appealed immense attention for various applications such as supercapacitors, flameretardants, photocatalyst, and wastewater treatment 21–24 . This is mainly due to nitrogen rich structure, high mechanical and thermal stability, facil and cost‐effective synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Among several carbon-nitrogen based materials, graphitic carbon nitrogen (g-C 3 N 4 ) have appealed immense attention for various applications such as supercapacitors, flameretardants, photocatalyst, and wastewater treatment. [21][22][23][24] This is mainly due to nitrogen rich structure, high mechanical and thermal stability, facil and cost-effective synthesis. According to the reports, g-C 3 N 4 can synthesize from pyrolysis of the various precursors including urea, melamine, and dicyanamide melamine.…”

Section: Introductionmentioning

confidence: 99%

Modification g‐C₃N₄ by MgO and its application for glycerol carbonate synthesis from glycerol and dimethyl carbonate

Reisi

Chermahini

2022

Env Prog and Sustain Energy

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Glycerol (GLY) as a by-product in bio-diesel synthesis should be converted to more valuable compounds. In the present study, MgO/graphitic carbon nitride (MgO/ g-C 3 N 4 ) was synthesized and characterized using several techniques, including FESEM, Fourier transform infrared, X-ray diffraction, TEM, and CO 2 -TPD. The MgO/g-C 3 N 4 catalysts illustrated high catalytic activity compared with pure g-C 3 N 4 and MgO for conversion of glycerol to glycerol carbonate (GC) through transesterification reaction between GLY and dimethyl carbonate (DMC). According to the results, the optimum reaction conditions were: reaction time of 4 h, reaction temperature of 80 C, molar ratio of reactants (DMC:GLY) 3:1, and MgO/C 3 N 4 catalyst dosage of 30 mg. The catalyst with a certain ratio of MgO:g-C 3 N 4 = 6:1 showed the maximum GC yield of 95.47% at 80 C and good reusability. The simple preparation method, good catalytic activity, and reusability of the catalyst shows capability of this catalytic system on an industrial scale.

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Mono lacunary phosphomolybdate supported on mesoporous graphitic carbon nitride: An eco-friendly and efficient catalyst for oxidative desulfurization of the model and real fuels

Cited by 19 publications

References 53 publications

Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

Modification g‐C₃N₄ by MgO and its application for glycerol carbonate synthesis from glycerol and dimethyl carbonate

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Mono lacunary phosphomolybdate supported on mesoporous graphitic carbon nitride: An eco-friendly and efficient catalyst for oxidative desulfurization of the model and real fuels

Cited by 19 publications

References 53 publications

Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

Reusable and Highly Active Copper-Based Lacunary-type Polyoxometalate (LPMo-Cu) as an Effective Catalyst for Nitroarene Reduction in Aqueous Solution

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

Modification g‐C3N4 by MgO and its application for glycerol carbonate synthesis from glycerol and dimethyl carbonate

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Modification g‐C₃N₄ by MgO and its application for glycerol carbonate synthesis from glycerol and dimethyl carbonate