Efficient Extractive Desulfurization of Fuel Oils Using <i>N</i>‐Pyrrolidone/Alkylphosphate‐Based Ionic Liquids

Liu, Chunhai; He, Qihui; Zhang, Zheng; Xu, Renfu; Hu, Baixing

doi:10.1002/cjoc.201400146

Cited by 15 publications

(4 citation statements)

References 78 publications

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“…Therefore, we choose 30 °C as the optimal extraction temperature for extractive desulfurization of fuel oil. At present, the influence of temperature on the desulfurization performance of the extractant reported in the study is mainly manifested as a gradual increase of the desulfurization rate from a low temperature to room temperature, which is mainly attributed to the decrease of the viscosity of extractant with the increase of temperature. − When the temperature increases from room temperature to a higher temperature, the desulfurization rate will decrease to some extent, which is mainly attributed to the exothermic process of extraction, so a too high temperature will reduce the desulfurization efficiency of the extraction agent to some extent …”

Section: Resultsmentioning

confidence: 91%

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents

Wang

2023

Energy Fuels

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As a new green solvent, deep eutectic solvents (DESs) have been widely studied in the fuel desulfurization industry. This study introduces for the first time a novel three-body DES synthesized from nitromethylpyrrolidone (NMP) as a hydrogen bond acceptor (HBA) and benzoic acid (BEN) and water (H 2 O) as hydrogen bond donors (HBDs). It is also used for extractive desulfurization (EDS) of model oil and analogue FCC gasoline. A Fourier transform infrared ( FT-IR) spectrometer was used to detect the hydrogen bond relationships among NMP, BEN, and H 2 O. The changes in viscosity and density of the three-body DESs also indicated the formation of intermolecular hydrogen bonds among the components and indicated the possible binding forms between the three components of DES. Three-body DESs (NMP/BEN/H 2 O) have higher activity, lower viscosity, and lower volatility than water-deficient two-body DESs (NMP/BEN). By adjusting the mass ratio between the three components and comparing the experimental results of desulfurization, it is shown that the three-body DES (8NMP/2BEN/0.06H 2 O) containing 6 wt % water has the best desulfurization performance, and its four-stage extractive desulfurization rate for the dibenzothiophene model oil (MO-3) can reach 99.8%. The results of this study may expand the application scope of H 2 O and provide a new type of DES for extractive desulfurization of fuel oil and other fields.

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Section: Resultsmentioning

confidence: 91%

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents

Wang

2023

Energy Fuels

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“…[209][210][211] Moreover, their high chemical and thermal stability, non-flammability, and negligible vapor pressure characteristics make them effective solvents for desulfurization. [201,212] A lot of research has been carried out on the imidazolium, phosphonium, and pyridiniumbased ILs for EDS. [213][214][215] However, complex purification process id required to prepare ILs which is radically the reason for their high price.…”

Section: Extractive Desulfurizationmentioning

confidence: 99%

MOFs for desulfurization of fuel oil: Recent advances and future insights

Saeed

Firdous

Zaman

et al. 2023

J Chinese Chemical Soc

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Nowadays, desulfurization of fuel oil has raised concern globally because of strict industrial and environmental legislations. Albeit hydrodesulfurization (HDS) has been extensively used in oil refineries to produce low sulfur oil (< 10 ppm) but not been proven as effective method for the removal of dibenzothiophene (DBT), benzothiophene (TH) and their derivatives. Subsequently, adsorptive desulfurization (ADS) and oxidative desulfurization (ODS) methods have been developed to achieve high removal efficiency. In the past decade, metal-organic frameworks (MOFs) and its composites as oxidative catalysts, as well as adsorbents, have attracted the researchers owing to high surface area, tunable properties, and reusable. The present review comprises use of MOFs and their composites for the removal of sulfur from fuel oil via ODS and ADS processes. Additionally, physicochemical properties of MOFs, mechanism, pros and cons of both process, regeneration, and future challenges have been discussed briefly. Moreover, current limitations and future prospective are also discussed.

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“…Besides, the reported results are influenced by the nature of different cation and anion structures of studied ILs . On the basis of some literature, the effects of cation and anion structures in the efficiency of the extractive process can be considered as a function of the size of structures. ,− In contrast, Holbery et al have claimed that the ionicity of anions plays the main role in the determination of extraction efficiency in comparison with the anion size. There are conflicting results in the literature because of the absence of scientific investigations taking into account the exact relationship between the structure of anions and the performance of the EDS process considering enough diversity for anion structures. ,,,,, These conflicts may be attributed to the negligence of the simultaneous effects of cation and hydrocarbon structures along with the anion structure in the determination of LLE of ternary systems.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is better to investigate the effect of anion structures on the LLE with the possible effects of involved cation or even a hydrocarbon solvent in the ternary system simultaneously. Also, there were many studies in the literature dealing with the effects of anion structures such as anion size using a limited anion diversity. ,− To get an informative molecular insight regarding the effect of anion structures, a suitable dataset with enough diversity of anion structures should be investigated. Quantitative structure–property relationship (QSPR) is a methodology in which a macroscopic property can be interpreted at the molecular level. , Recently, this method has been used in our work to investigate the effect of hydrocarbon structures on the thiophene distribution coefficient between IL- and hydrocarbon-rich phases successfully.…”

Section: Introductionmentioning

confidence: 99%

How Anion Structures Can Affect the Thiophene Distribution between Imidazolium-Based Ionic Liquid and Hydrocarbon Phases? A Theoretical QSPR Study

Gorji

Sobati

2019

Energy Fuels

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In this study, the effects of different anion structures have been investigated on the thiophene distribution between ionic liquid (IL) and hydrocarbon phases in the ternary systems using quantitative structure−property relationship. The role of anion structures was investigated in the presence of different cations and hydrocarbons. In this regard, three different datasets were selected from the literature containing {([C n MIM/anion]−thiophene−different hydrocarbon solvents): n = 2, 4, and 8} with 445 data points. It was found that the "E1v" descriptor of anions, belonging to the WHIM descriptor category, can take into account the effect of anion structures on the thiophene distribution for the systems containing the IL with the [C 2 MIM] cation and different hydrocarbons. It was found that increasing the E1v values of anion structures leads to a decrease in the thiophene distribution coefficients. E1v reflects the unfilled space of the anion structure, which in turn affects the interactions of the anion and cation in the IL structure. More unfilled spaces of the anion structure lead to more powerful interaction with the cation, which in turn limit the cation interaction with thiophene and decrease the thiophene distribution coefficient. It was also found that the effect of the anion on the thiophene distribution is decreased by increasing the length of alkyl chains in the cation from [C 2 MIM] to [C 4 MIM] and [C 8 MIM]. This finding can be attributed to the higher free volumes of [C 4 MIM] and [C 8 MIM] cations in comparison with that of [C 2 MIM], which allows more efficient packing of thiophene in the IL structure.

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Efficient Extractive Desulfurization of Fuel Oils Using N‐Pyrrolidone/Alkylphosphate‐Based Ionic Liquids

Cited by 15 publications

References 78 publications

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents

MOFs for desulfurization of fuel oil: Recent advances and future insights

How Anion Structures Can Affect the Thiophene Distribution between Imidazolium-Based Ionic Liquid and Hydrocarbon Phases? A Theoretical QSPR Study

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Efficient Extractive Desulfurization of Fuel Oils Using N‐Pyrrolidone/Alkylphosphate‐Based Ionic Liquids

Cited by 15 publications

References 78 publications

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H2O Deep Eutectic Solvents

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H2O Deep Eutectic Solvents

MOFs for desulfurization of fuel oil: Recent advances and future insights

How Anion Structures Can Affect the Thiophene Distribution between Imidazolium-Based Ionic Liquid and Hydrocarbon Phases? A Theoretical QSPR Study

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Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents

Extractive Desulfurization of Liquid Fuel with Three-Body NMP/BEN/H₂O Deep Eutectic Solvents