Mechanisms of Desulfurization by Nanomaterials

Ahmad, Waqas; Ahmad, Imtiaz

doi:10.1007/978-3-319-60630-9_8

Cited by 5 publications

(3 citation statements)

References 120 publications

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“…According to the mechanisms of catalytic reactions suggested by the researchers, NCs most often act as oxygen transfer agents, are converted into peroxide particles, or facilitate dissociation of the oxidant, and ensure selective oxidation of sulfur-containing compounds [25,27,43,48,53,57,[74][75][76][83][84][85]. It was shown using the examples of 4PW 11 Fe@PbO nanocatalyst and H 2 O 2 /CH 3 COOH oxidant that the kinetics of sulfur oxidation in the course of ODS is of the pseudo first-order type [27].…”

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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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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“…High temperatures and the requirement for oxidants in the process of oxidative desulfurization also limit its usefulness. 4 At the industrial level, the conventional method used is hydrodesulfurization, but requirements such as high temperature and pressure and an expensive setup restrict its application. 5,6 However, adsorptive desulfurization can be advantageous over above-mentioned methods in terms of recyclability of adsorbent, high selectivity towards the targeted compound, tailorable functional properties and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Cobalt-based metal–organic framework for desulfurization of thiophene as a model fuel

Nilavu,

Leelasree,

Aggarwal

et al. 2024

Sustainable Energy Fuels

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“…Since ODS efficiency can be further enhanced by using a variety of catalysts, different types of catalyst-oxidant systems like NaClO/Mn-Co-Mo/Al 2 O 3 [10], H 2 O 2 /Mo/γ-Al 2 O 3 [11], H 2 O 2 /WOx/ZrO 2 [12], H 2 O 2 /V 2 O 5 [4], H 2 O 2 /activated carbon TBHP/(Me 3 TACN)Mn [13], TBHP/Bi-Mo/Siral [14], TBHP/Ti-MCM-41 and MMO/GO [15], and various types of polyoxometalate [16,17] have been studied. Each of these catalytic ODS systems follows different oxidation mechanisms of sulfur compounds [18]. Sulfur removal has also been investigated by photooxidation using various photocatalysts [19,20].…”

Section: Introductionmentioning

confidence: 99%

Oxidative Desulfurization of Petroleum Distillate Fractions Using Manganese Dioxide Supported on Magnetic Reduced Graphene Oxide as Catalyst

et al. 2021

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In this study, oxidative desulfurization (ODS) of modeled and real oil samples was investigated using manganese-dioxide-supported, magnetic-reduced graphene oxide nanocomposite (MnO2/MrGO) as a catalyst in the presence of an H2O2/HCOOH oxidation system. MnO2/MrGO composite was synthesized and characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analyses. The optimal conditions for maximum removal of dibenzothiophene (DBT) from modeled oil samples were found to be efficient at 40 °C temperature, 60 min reaction time, 0.08 g catalyst dose/10 mL, and 2 mL of H2O2/formic acid, under which MnO2/MrGO exhibited intense desulfurization activity of up to 80%. Under the same set of conditions, the removal of only 41% DBT was observed in the presence of graphene oxide (GO) as the catalyst, which clearly indicated the advantage of MrGO in the composite catalyst. Under optimized conditions, sulfur removal in real oil samples, including diesel oil, gasoline, and kerosene, was found to be 67.8%, 59.5%, and 51.9%, respectively. The present approach is credited to cost-effectiveness, environmental benignity, and ease of preparation, envisioning great prospects for desulfurization of fuel oils on a commercial level.

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Mechanisms of Desulfurization by Nanomaterials

Cited by 5 publications

References 120 publications

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

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

Cobalt-based metal–organic framework for desulfurization of thiophene as a model fuel

Oxidative Desulfurization of Petroleum Distillate Fractions Using Manganese Dioxide Supported on Magnetic Reduced Graphene Oxide as Catalyst

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