One-pot extractive and oxidative desulfurization of liquid fuels with molecular oxygen in ionic liquids

A new class of green solvents, known as ionic liquids (ILs), has recently been the subject of intensive research on the extractive desulfurization of liquid fuels because of the limitation of traditional hydrodesulfurization method. In present work, eleven Lewis acid ionic liquids were synthesized and employed as promising extractants for deep desulfurization of the liquid fuel containing dibenzothiophene (DBT) to test the desulfurization efficiency. [Bmim]Cl/FeCl3was the most promising ionic liquid and performed the best among studied ionic liquids under the same operating conditions. It can remove dibenzothiophene from the model liquid fuel in the single-stage extraction process with the maximum desulfurization efficiency of 75.6%. It was also found that [Bmim]Cl/FeCl3may be reused without regeneration with considerable extraction efficiency of 47.3%. Huge saving on energy can be achieved if we make use of this ionic liquids behavior in process design, instead of regenerating ionic liquids after every time of extraction.

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WO3 and Ionic Liquids: A Synergic Pair for Pollutant Gas Sensing and Desulfurization

Metals ◽

10.3390/met10040475 ◽

2020 ◽

Vol 10 (4) ◽

pp. 475 ◽

Cited By ~ 2

Author(s):

Francesca D’Anna ◽

Maria Luisa Grilli ◽

Rita Petrucci ◽

Marta Feroci

Keyword(s):

Ionic Liquids ◽

Performance Enhancement ◽

Gas Adsorption ◽

Gas Sensing ◽

Sulfur Removal ◽

Oxidative Desulfurization ◽

Catalytic Efficiency ◽

Liquid Fuels ◽

High Dispersion ◽

Catalytic Material

This review deals with the notable results obtained by the synergy between ionic liquids (ILs) and WO3 in the field of pollutant gas sensing and sulfur removal pretreatment of fuels. Starting from the known characteristics of tungsten trioxide as catalytic material, many authors have proposed the use of ionic liquids in order to both direct WO3 production towards controllable nanostructures (nanorods, nanospheres, etc.) and to modify the metal oxide structure (incorporating ILs) in order to increase the gas adsorption ability and, thus, the catalytic efficiency. Moreover, ionic liquids are able to highly disperse WO3 in composites, thus enhancing the contact surface and the catalytic ability of WO3 in both hydrodesulfurization (HDS) and oxidative desulfurization (ODS) of liquid fuels. In particular, the use of ILs in composite synthesis can direct the hydrogenation process (HDS) towards sulfur compounds rather than towards olefins, thus preserving the octane number of the fuel while highly reducing the sulfur content and, thus, the possibility of air pollution with sulfur oxides. A similar performance enhancement was obtained in ODS, where the high dispersion of WO3 (due to the use of ILs during the synthesis) allows for noteworthy results at very low temperatures (50 °C).

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Thermally regulated molybdate-based ionic liquids toward molecular oxygen activation for one-pot oxidative cascade catalysis

Green Chemistry ◽

10.1039/c9gc03646f ◽

2020 ◽

Vol 22 (1) ◽

pp. 103-109 ◽

Cited By ~ 7

Author(s):

Zhibin Song ◽

Wei Huang ◽

Yan Zhou ◽

Zi-Qi Tian ◽

Zhang-Min Li ◽

...

Keyword(s):

Ionic Liquids ◽

Molecular Oxygen ◽

Oxygen Activation ◽

Efficient Synthesis ◽

One Pot ◽

Highly Efficient ◽

Cascade Catalysis

A family of thermally regulated molybdate-based ionic liquids has been developed for highly efficient synthesis of various flavones, imines, and benzyl benzoates through one-pot oxidative cascade catalysis.

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FeCl3 Based Imidazolium Ionic Liquids as Novel Solvents for Extractive–Oxidative Desulfurization of Liquid Fuels

Journal of Solution Chemistry ◽

10.1007/s10953-015-0310-8 ◽

2015 ◽

Vol 44 (3-4) ◽

pp. 652-668 ◽

Cited By ~ 3

Author(s):

Swapnil A. Dharaskar ◽

Kailas L. Wasewar ◽

Mahesh N. Varma ◽

Diwakar Z. Shende

Keyword(s):

Ionic Liquids ◽

Oxidative Desulfurization ◽

Liquid Fuels ◽

Imidazolium Ionic Liquids

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

Catalysts ◽

10.3390/catal11091131 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1131

Author(s):

Olga Maslova ◽

Olga Senko ◽

Argam Akopyan ◽

Sergey Lysenko ◽

Alexander Anisimov ◽

...

Keyword(s):

Liquid Fuel ◽

Oxidative Desulfurization ◽

Liquid Fuels ◽

Bacterial Cells ◽

Advantages And Disadvantages ◽

4S Pathway ◽

Oil Fractions ◽

Hybrid Technologies ◽

Sulfur Containing ◽

Sulfur Containing Compounds

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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