Peroxide oxidative desulfurization of a mixture of nonhydrotreated vacuum gas oil and diesel fraction

Rakhmanov, E. V.; Domashkin, A. A.; Мылтыкбаева, Ж. К.; Каирбеков, Ж. К.; Shigapova, Anastasia; Akopyan, A. V.; Анисимов, А. В.

doi:10.1134/s0965544116080156

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…In ODS, it is quite rare to find an efficient oxidant-catalyst system allowing desulfurization in a few minutes. Oxidation time varies mostly between 1 and 10 h [13,14,16,23,36]. However, Mohammed et al [31] have demonstrated desulfurization of crude oil in 15 min (results mentioned above), while Otsuki et al (2010) [10] reported the oxidation of SRGO and VGO using H 2 O 2 /HCOOH in 36 h. This long reaction time was mainly related to the multiple steps used for the addition of oxidant and acid in small fractions.…”

Section: Reaction Timementioning

confidence: 99%

“…The effect of this ratio was extensively studied [13,23,26,30,32]. In many cases, oxidation reaction of petroleum mixture was performed using a molar ratio of oxidant:sulfur of 2.…”

Section: Oxidantmentioning

confidence: 99%

“…Additional chemical reagents were also introduced to the system containing fuel, oxidant, and catalyst with the purpose of accelerating reaction. Rakhamanov et al (2016) [23] mentioned the use of phase transfer agents (PTA) reinforcing reaction, for the desulfurization process of a mixture of light gas oil with vacuum gas oil having 0.68 wt.%S, using the formic acid/hydrogen peroxide system with an oxidant to sulfur ratio of 4 and an acid to oxidant ratio of 1. Phase transfer catalyst was then added.…”

Section: Additional Reagentsmentioning

confidence: 99%

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Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

et al. 2018

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The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur is found in bulky thiophenic structures difficult to remove using conventional high pressure hydrodesulfurization process. However they appeared more reactive in oxidative desulfurization (ODS) process, carried out at mild conditions without hydrogen pressure. This review focuses for the first time on the heavy fuels initially containing more than 0.5 wt.%S and upgraded by the ODS process. Different attractive approaches of the literature towards ODS are reported using homogeneous and heterogeneous catalysis. Recent developments in ODS assisted with ultrasound technology and the use of ionic liquid to enhance ODS efficiency will be fully detailed and discussed to better understand their viability when applied to high sulfur content, high viscosity, and high boiling point feeds.

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Section: Reaction Timementioning

confidence: 99%

“…The effect of this ratio was extensively studied [13,23,26,30,32]. In many cases, oxidation reaction of petroleum mixture was performed using a molar ratio of oxidant:sulfur of 2.…”

Section: Oxidantmentioning

confidence: 99%

Section: Additional Reagentsmentioning

confidence: 99%

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Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

et al. 2018

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“…Oxidative desulfurization (ODS) is an alternative method that can be used with fuel oils instead of reductive HDS. − ODS avoids the use of hydrogen and can be carried out under milder reaction conditions. In this process, hydrogen peroxide (H 2 O 2 ) is the most commonly used oxidizing agent, along with organic acids such as acetic acid (CH 3 CO 2 H) or formic acid (HCO 2 H) to form the corresponding peroxy-organic acids (CH 3 CO 3 H or HCO 3 H).…”

Section: Introductionmentioning

confidence: 99%

Oxidative and Extractive Desulfurization of Fuel Oils Catalyzed by N-Carboxymethyl Pyridinium Acetate and N-Carboxyethyl Pyridinium Acetate Acidic Ionic Liquids: Experimental and Computational DFT Study

Sager,

Rahman,

Imtiaz

et al. 2024

ACS Omega

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This study reports on the synthesis, characterization, and application of two acidic ionic liquids, namely, N-carboxymethylpyridinium acetate ([HO2CCH2Py][CH3CO2] or AIL1) and N-carboxyethylpyridinium acetate ([HO2C(CH2)2Py][CH3CO2] or AIL2), as both extractants and catalysts for the oxidative and extractive desulfurization (OEDS) of model fuel oils containing heteroaromatic sulfur compounds. The structural properties of the synthesized acidic ionic liquids (ILs) were confirmed by 1H NMR, 13C NMR, and FT-IR spectroscopic analysis. To optimize the performance of the acidic AILs in the desulfurization process, the effects of different parameters, such as H2O2 dosage, reaction time, and temperatures, were investigated. The experimental results showed that AIL1 has exceptionally high desulfurization–extraction rates, with values of 99.8%, 97.8%, and 95.4%, for DBT, BT, and 4,6-DMDBT, respectively, under the optimum conditions established. Under the same conditions, the desulfurization-extraction rates using AIL2 reached 91.6%, 87.3%, and 82.4%, respectively, for DBT, 4, 6-DMDBT, and BT. Both ionic liquids can be recycled up to 9 times without a significant decrease in their sulfur removal efficiencies. Furthermore, density functional theory (DFT) calculations were conducted to evaluate the electronic interaction energies (ΔIE) between the AILs with each of the sulfur-containing compounds and their putative oxidized products. The computational findings strongly supported the experimental outcomes.

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“…ODS is carried out in the presence of a catalyst and an oxidant agent. Among the different oxidation systems that have been used, the hydrogen peroxide-carboxylic acid system [ 17 – 20 ], which produces in situ peracids, has major advantages, such as high-quality products, safety, low cost, and low environmental impact. In order to overpass the low mass transfer due to the low solubility of H 2 O 2 , cumene hydroperoxide [ 21 ] and cyclohexanone peroxide (CYHPO) [ 22 ] have also been proposed for ODS.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Syntyhaki

Detsi

Karonis

2020

Journal of Analytical Methods in Chemistry

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The oxidative desulfurization of five (5) model sulfur compounds and eleven (11) surrogate blends was investigated using the hydrogen peroxide (H2O2)-acetic acid (CH3COOH) system. Consequently, extractive desulfurization was carried out using conventional solvents. The model sulfur compounds, as well as the solvent, are present in petroleum middle distillates. The selection of the compounds was made so that they represent various kinds of sulfur compounds. The goal of this study was the implementation of a simple and economical oxidative and extractive system for the desulfurization of surrogate mixtures with an intermediate sulfur concentration 1% w/w, at the mild temperature of 70°C, and without the use of supplementary and assisting methods such as heterogeneous catalysis or ultrasound irradiation. The sulfur content was estimated using X-ray fluorescence. The progress of the oxidation reaction was monitored using liquid FT-IR. The solid sediments of the oxidation procedure were identified with solid-state FT-IR and 1H NMR spectroscopy.

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Peroxide oxidative desulfurization of a mixture of nonhydrotreated vacuum gas oil and diesel fraction

Cited by 10 publications

References 3 publications

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Oxidative and Extractive Desulfurization of Fuel Oils Catalyzed by N-Carboxymethyl Pyridinium Acetate and N-Carboxyethyl Pyridinium Acetate Acidic Ionic Liquids: Experimental and Computational DFT Study

Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

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