A Study on the Oxidation-extraction Desulfurization of FCC Gasoline Over Supported Phosphotungstic Acid/H<sub>2</sub>O<sub>2</sub>/Dimethyl Sulfoxide (DMSO)

Cai, Tianfeng; Li, H.-P.; Zhao, H.

doi:10.1080/10916466.2012.704111

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…The reason why 8NMP/2BEN/0.06H 2 O has the lowest desulfurization rate for MO-4 is that MO-4 contains olefin, aromatics, cycloalkanes and cycloolefin, and other substances, resulting in competition between 8NMP/2BEN/0.06H 2 O and thiophene sulfide in the process of extractive desulfurization. − Some 8NMP/2BEN/0.06H 2 O interact with other substances, thus affecting the liquid–liquid mass transfer efficiency between 8NMP/2BEN/0.06H 2 O and thiophene sulfide and ultimately resulting in the low desulfurization rate of 8NMP/2BEN/0.06H 2 O for MO-4. It can be seen from the liquid phase spectrum for detecting sulfur content in MO-4 that the peak area of toluene is reduced by about 4000 mAu·s, indicating that 8NMP/2BEN/0.06H 2 O also has a certain ability to remove aromatics, which leads to a decrease in the desulfurization rate of 8NMP/2BEN/0.06H 2 O.…”

Section: Resultsmentioning

confidence: 99%

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: 99%

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

Wang

2023

Energy Fuels

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“…Since the last fifteen years, several articles reported the preparation of heterogeneous catalysts based on the simple wet impregnation of variable amounts of phosphotungstic acid over mesoporous SBA-15 or mixed HY-SBA-15 composite zeolite [194], with the aim to study their catalytic activity in the ODS process applied either to model fuels [195] or real feeds [196] with H 2 O 2 , TBHP o air [197] as main oxidants. In general, these catalytic systems showed high activity and stability, being possible to reuse the heterogeneous catalysts after the regeneration step.…”

Section: Phosphotungstic Containing Pomsmentioning

confidence: 99%

SBA-15 Anchored Metal Containing Catalysts in the Oxidative Desulfurization Process

2019

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Recalcitrant sulfur compounds are common impurities in crude oil. During combustion they produce SOx derivatives that are able to affect the atmospheric ozone layer, increasing the formation of acid rains, and reducing the life of the engine due to corrosion. In the last twenty years, many efforts have been devoted to develop conventional hydrodesulfurization (HDS) procedures, as well as alternative methods, such as selective adsorption, bio-desulfurization, oxidative desulfurization (ODS) under extractive conditions (ECODS), and others. Among them, the oxidative procedures have been usually accomplished by the use of toxic stoichiometric oxidants, namely potassium permanganate, sodium bromate and carboxylic and sulfonic peracids. As an alternative, increasing interest is devoted to selective and economical procedures based upon catalytic methods. Heterogeneous catalysis is of relevance in industrial ODS processes, since it reduces the leaching of active species and favors the recovery and reuse of the catalyst for successive transformations. The heterogenization of different types of high-valent metal transition-based organometallic complexes, able to promote the activation of stoichiometric benign oxidants like peroxides, can be achieved using various solid supports. Many successful cases have been frequently associated with the use of mesoporous silicas that have the advantage of easy surface modification by reaction with organosilanes, facilitating the immobilization of homogeneous catalysts. In this manuscript the application of SBA-15 as efficient support for different active metal species, able to promote the catalytic ODS of either model or real fuels is reviewed, highlighting its beneficial properties such as high surface area, narrow pore size distribution and tunable pore diameter dimensions. Related to this topic, the most relevant advances recently published, will be discussed and critically described.

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A comprehensive review on oxidative desulfurization catalysts targeting clean energy and environment

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A Study on the Oxidation-extraction Desulfurization of FCC Gasoline Over Supported Phosphotungstic Acid/H₂O₂/Dimethyl Sulfoxide (DMSO)

Cited by 3 publications

References 8 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

SBA-15 Anchored Metal Containing Catalysts in the Oxidative Desulfurization Process

A comprehensive review on oxidative desulfurization catalysts targeting clean energy and environment

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A Study on the Oxidation-extraction Desulfurization of FCC Gasoline Over Supported Phosphotungstic Acid/H2O2/Dimethyl Sulfoxide (DMSO)

Cited by 3 publications

References 8 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

SBA-15 Anchored Metal Containing Catalysts in the Oxidative Desulfurization Process

A comprehensive review on oxidative desulfurization catalysts targeting clean energy and environment

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A Study on the Oxidation-extraction Desulfurization of FCC Gasoline Over Supported Phosphotungstic Acid/H₂O₂/Dimethyl Sulfoxide (DMSO)

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