Catalytic aerobic desulfurization of fuels in the presence of nanosized mixed carbide FeWC

Akopyan, A. V.; Eseva, E. A.; Mnatsakanyan, R. A.; Davtyan, David A.; Lukashov, Maxim O.; Левин, И. С.; Sadovnikov, Alexey A.; Анисимов, А. В.; Terzyan, A. M.; Agoyan, Artur M.; Karakhanov, Eduard

doi:10.1016/j.cej.2023.142641

Cited by 11 publications

(3 citation statements)

References 73 publications

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“…The combustion of such fuels results in the production of sulfur oxides (SO X ), which is known to contribute to atmospheric pollution and the occurrence of acid rain. 1,2 A number of environmental rules, such as the National Ambient Air Quality Standards (NAAQS), the International Maritime Organization (IMO), Emission Control Areas (ECAs), and European Coastal Areas (ECAs), impose limitations on sulfur emissions under various conditions. 3−5 There are several methods used for desulfurization of liquid fuels.…”

Section: Introductionmentioning

confidence: 99%

“…Sulfur-containing compounds (SCCs) are found in crude oil, natural gas, and coal. The combustion of such fuels results in the production of sulfur oxides (SO X ), which is known to contribute to atmospheric pollution and the occurrence of acid rain. , A number of environmental rules, such as the National Ambient Air Quality Standards (NAAQS), the International Maritime Organization (IMO), Emission Control Areas (ECAs), and European Coastal Areas (ECAs), impose limitations on sulfur emissions under various conditions. − There are several methods used for desulfurization of liquid fuels. , Hydrodesulfurization (HDS) and oxidative desulfurization (ODS) are two extensively employed techniques used for this objective. The HDS process is widely utilized as the predominant technique for the desulfurization of liquid fuels, due to its compatibility with other refining processes such as naphtha reforming for production of required hydrogen and Claus process for converting H 2 S to elemental sulfur .…”

Section: Introductionmentioning

confidence: 99%

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Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Adhami,

Movahedirad,

Sobati

2024

Energy Fuels

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In this study, a novel method for the sulfur removal of the mixed fuel (70% vacuum gas oil and 30% natural gas condensate) using ozone microbubbles as the oxidant followed by solvent extraction in a millichannel has been investigated. In this regard, the mixed fuel was saturated with a gaseous oxidant (i.e., ozone) in a pressurized saturation chamber. After that, dissolved ozone appeared in the form of microbubbles by passing through a pressure-reducing valve, which could perform the oxidation of sulfur-containing compounds efficiently. It was revealed that ∼75% sulfur removal was achieved by oxidation of fuel for 60 min with an ozone saturating pressure of 2.5 barg, while the same level of the desulfurization was attained for 90 min of oxidation at 1.5 barg. Afterward, the oxidized sulfur compounds were removed by extraction inside a millichannel. It was found that the sulfur removal efficiency could be enhanced by 12% in comparison with solvent extraction using a batch contactor. Chemical consumption and energy input requirement are the other factors characterized in this study and compared with the conventional oxidative desulfurization process. The results have revealed that applying a saturating pressure of 1.5 barg for 120 min of ozonation has decreased the energy consumption by about 15% to achieve a certain desulfurization level.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Adhami,

Movahedirad,

Sobati

2024

Energy Fuels

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“…The major content of the sulfur compounds (such as thiols, sulfides, and disulfides) is removed by HDS technology; however, some refractory sulfur compounds, such as dibenzothiophene (DBT) and its alkylated derivatives, cannot be easily removed by conventional HDS . In order to remove the HDS refractory sulfur compounds effectively, non-HDS methods such as adsorption, oxidation, biodesulfurization, and extractive desulfurization (EDS) have been investigated. , Extractive desulfurization (EDS) is an attractive non-HDS method due to its high capability in the removal of refractory sulfur compounds, its simplicity, and its low energy consumption due to mild operating conditions compared to HDS technology …”

Section: Introductionmentioning

confidence: 99%

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Mahdavi,

Sobati,

Movahedirad

2023

Energy Fuels

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In the present study, the optimization of extractive desulfurization in the microchannels was investigated using a deep eutectic solvent (DES). The influence of some operating and microchannel geometrical parameters, including the initial sulfur concentration of fuel, the length of the microchannel, the DES flow rate, and the ratio of fuel to DES flow rate (RF/D), on sulfur removal was investigated using response surface methodology (RSM). Moreover, the flow pattern map in the microchannels was investigated. In this regard, different flow patterns of slug, lengthy slug, smooth annular, throat annular, wavy annular, and droplet were observed in the microchannels applied in the extractive desulfurization (EDS) process. Besides, the effects of the inertial force, interfacial tension force, and viscosity force on the different flow patterns were discussed by analyzing the capillary number, the Weber number, and the Reynolds number. It was found that the most effective regime in the EDS process in the microchannel is the slug flow pattern in which the interfacial tension force (6 × 10 −5 < Weber number < 0.82767) is dominant. Based on the analysis of the RSM proposed model, it was also found that the RF/D is the main influential parameter on sulfur removal, and 73.2% sulfur removal was achieved in the microchannel under the optimum conditions in a very short residence time of 2.5 s. The results also confirmed the capability of this EDS process for sulfur removal from real diesel fuel.

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Two‐Dimensional Janus p‐n Heterojunction of Co₃O₄ and CoMoO₄ for Boosting Photocatalytic Oxidative Desulfurization

Wang,

Lan,

et al. 2024

Chin. J. Chem.

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Comprehensive SummaryPhotocatalytic aerobic oxidative desulfurization (PAODS) is a sustainable alternative technology to traditional, energy‐intensive fuel desulfurization methods. Nonetheless, its advancement is hindered by the notable challenge of inadequate electron‐hole separation efficiency within the existing catalytic systems. Herein, a Janus 2D/2D heterostructure composed of Co3O4 and CoMoO4 is reported for the PAODS of thiophenic sulfides. Through a combination of detailed experimental characterizations and density functional theory (DFT) calculations, we elucidate the formation of a type II p‐n heterojunction in the catalyst, significantly enhancing electron‐hole separation through electric field force and reducing the possibility of electron‐hole recombination due to the spatial separation of redox centres. The photocatalyst exhibits exceptional activity and demonstrates an impressive performance of 10.4 mmol·g–1·h–1 in the oxidation of dibenzothiophene (DBT). Moreover, the photocatalyst demonstrates profound desulfurization capabilities in real diesel, reinforcing its promising prospects for industrial application. These discoveries provide invaluable insights, both scientifically and practically, towards the development of advanced photocatalysts for PAODS processes.

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Catalytic aerobic desulfurization of fuels in the presence of nanosized mixed carbide FeWC

Cited by 11 publications

References 73 publications

Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Two‐Dimensional Janus p‐n Heterojunction of Co₃O₄ and CoMoO₄ for Boosting Photocatalytic Oxidative Desulfurization

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Catalytic aerobic desulfurization of fuels in the presence of nanosized mixed carbide FeWC

Cited by 11 publications

References 73 publications

Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Novel Method for Desulfurization of Mixed Fuel via Microbubble Oxidation Followed by Microtube Extraction

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Two‐Dimensional Janus p‐n Heterojunction of Co3O4 and CoMoO4 for Boosting Photocatalytic Oxidative Desulfurization

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Product

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Two‐Dimensional Janus p‐n Heterojunction of Co₃O₄ and CoMoO₄ for Boosting Photocatalytic Oxidative Desulfurization