Effectiveness of ionic liquids in extractive–oxidative desulfurization of liquid fuels: a review

Desai, Komal; Dharaskar, Swapnil; Khalid, Mohammad; Gedam, Vidyadhar V.

doi:10.1007/s11696-021-02038-3

Cited by 24 publications

(6 citation statements)

References 196 publications

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“…All the chemicals were used of analytical grade; melamine (C 3 H 6 N 6 , 99%, MW= 126. 12 Synthesis of g-C 3 N 4 , CoWO 4 @g-C 3 N 4 and Bi 2 WO 6 @g-C 3 N 4 Graphitic carbon nitride was synthesized by thermal polycondensation of melamine at 550°C for 5 h. The resultant yellow product was collected and milled into powder for further use as support as well as a catalyst in our reaction 29 The synthesis of CoWO 4 @g-C…”

Section: Methodsmentioning

confidence: 99%

“…This technique is also not effective for the removal of alkylated organic sulfur compounds and polyaromatic sulfur compounds such as BT and DBT due to steric hindrance and low reactivity of these compounds in hydrogenation treatments. 11,12 Comparison with other techniques, ODS has attained more consideration and is supposed to be the most promising owing to cost effective and no high temperature and pressure requirements. Sulfides and other sulfur-containing compounds are oxidized to sulfones and sulfoxides by using a catalyst in ODS and then extracted from the fuel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of graphitic carbon nitride supported novel nanocomposites for green and efficient oxidative desulfurization of fuel oil

Jabar

Saeed

Khoso

et al. 2022

Nanomaterials and Nanotechnology

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The catalysts utilized for oxidative desulfurization have acquired significant attention and ability to improve the quality of the fuel oil by removing sulfur. In this work, the catalysts used for oxidative desulfurization include CoWO4 and Bi2WO6 with graphitic carbon nitride (g-C3N4) as support were synthesized by the one-pot hydrothermal method. Graphitic carbon nitride was obtained by thermal polycondensation of melamine at 550°C for 5 h. These catalysts were homogeneously dispersed on the surface of the support and their structure, morphology, and properties were determined by different characterization techniques (Powder X-Ray Diffractometer, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy, Specific Surface Area (Brunauer, Emmett and Teller (SBET)). The parameters that affect the efficiency of the desulfurization process such as catalyst amount, amount of oxidizing agent, and reaction temperature have been optimized thoroughly. The oxidative desulfurization reaction was studied in terms of kinetics which shows that reaction is pseudo first order. The thermodynamic studies revealed that the reaction is endothermic and spontaneous in nature. The results determined that the catalytic efficiency for the removal of sulfur (as dibenzothiophene) is more than 90% in the presence of support (g-C3N4) to obtain sulfur free fuel.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of graphitic carbon nitride supported novel nanocomposites for green and efficient oxidative desulfurization of fuel oil

Jabar

Saeed

Khoso

et al. 2022

Nanomaterials and Nanotechnology

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“…The EDS of hydrocarbon mixtures using ILs as extractants has garnered considerable attention over the past decades. ,,− EDS represents a promising technology with an efficient and straightforward operating process under ambient temperature and pressure without hydrogen consumption. It is more recognized than other desulfurization techniques owing to its lack of reliance on catalysts or additional materials and operation under normal circumstances. , The chemical composition of compounds in fuel oil remains unchanged throughout the EDS process, resulting in minimal effect on the quality of fuel oil.…”

Section: Heterocyclic Compound Extraction Using Ilsmentioning

confidence: 99%

Hydrocarbon Extraction with Ionic Liquids

Yu,

Dai,

Liu

et al. 2024

Chem. Rev.

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Separation and reaction processes are key components employed in the modern chemical industry, and the former accounts for the majority of the energy consumption therein. In particular, hydrocarbon separation and purification processes, such as aromatics extraction, desulfurization, and denitrification, are challenging in petroleum refinement, an industrial cornerstone that provides raw materials for products used in human activities. The major technical shortcomings in solvent extraction are volatile solvent loss, product entrainment leading to secondary pollution, low separation efficiency, and high regeneration energy consumption due to the use of traditional organic solvents with high boiling points as extraction agents. Ionic liquids (ILs), a class of designable functional solvents or materials, have been widely used in chemical separation processes to replace conventional organic solvents after nearly 30 years of rapid development. Herein, we provide a systematic and comprehensive review of the state-of-the-art progress in ILs in the field of extractive hydrocarbon separation (i.e., aromatics extraction, desulfurization, and denitrification) including (i) molecular thermodynamic models of IL systems that enable rapid large-scale screening of IL candidates and phase equilibrium prediction of extraction processes; (ii) structure–property relationships between anionic and cationic structures of ILs and their separation performance (i.e., selectivity and distribution coefficients); (iii) IL-related extractive separation mechanisms (e.g., the magnitude, strength, and sites of intermolecular interactions depending on the separation system and IL structure); and (iv) process simulation and design of IL-related extraction at the industrial scale based on validated thermodynamic models. In short, this Review provides an easy-to-read exhaustive reference on IL-related extractive separation of hydrocarbon mixtures from the multiscale perspective of molecules, thermodynamics, and processes. It also extends to progress in IL analogs, deep eutectic solvents (DESs) in this research area, and discusses the current challenges faced by ILs in related separation fields as well as future directions and opportunities.

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“…hydroformylation [15,[17][18][19][20], hydrodesulfurization [21][22][23], and syngas reactions [24,25]. In all these cases, H2 as the lightest molecular species partially dissolves in the SILP film, while the rest builds a gas phase above the IL-rich phase.…”

Section: Introductionmentioning

confidence: 99%

Influence of Molecular Hydrogen on Bulk and Interfacial Properties of Three Imidazolium-Based Ionic Liquids by Experiments and Molecular Dynamics Simulations

Zhai,

Hantal,

Cherian

et al. 2024

Preprint

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Despite the presence of molecular hydrogen (H2) in various technical applications involving ionic liquids (ILs), its effect on the bulk and interfacial properties of ILs is poorly understood. The present study investigates the influence of dissolved H2 on the viscosity, surface tension, and phase composition of three imidazolium-based ILs by experiments and Molecular Dynamics (MD) simulations between (303 and 393) K from (0.1 to 31) MPa. The surface light scattering and pendant-drop experiments showed for all three ILs that the saturated liquid viscosity does not significantly change with increasing H2 pressure, while the surface tension decreases about 5% at 8 MPa. The MD simulations could be used to clarify microscopic origins for the behavior of the macroscopic properties. They revealed not only a compensation of compression and solvation effects due to hydrostatic pressure and dissolved H2 on the viscosity, but also a weak enrichment of H2 at the IL-gas interfaces.

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Effectiveness of ionic liquids in extractive–oxidative desulfurization of liquid fuels: a review

Cited by 24 publications

References 196 publications

Development of graphitic carbon nitride supported novel nanocomposites for green and efficient oxidative desulfurization of fuel oil

Development of graphitic carbon nitride supported novel nanocomposites for green and efficient oxidative desulfurization of fuel oil

Hydrocarbon Extraction with Ionic Liquids

Influence of Molecular Hydrogen on Bulk and Interfacial Properties of Three Imidazolium-Based Ionic Liquids by Experiments and Molecular Dynamics Simulations

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