Oxidative extractive desulfurization of fuel catalyzed via carboxylic acid and metal halides

Saini, Nisha; Yadav, Pooja; Kumar, Kamal; Ghosh, Prasenjit

doi:10.1016/j.matpr.2022.10.009

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…Beyond the conventional hydrodesulfurization method, there are a few different approaches to desulfurization, and these include adsorptive desulfurization (ADS), − extractive desulfurization (EDS), − biodesulfurization (BDS), , oxidative desulfurization (ODS), − and oxidative-extractive desulfurization (OEDS). − Adsorptive desulfurization involves the treatment of a fuel with an activated/functionalized adsorbent to remove the sulfur under mild temperature (ranging from room temperature to around 100 °C) conditions. The most common adsorbents that have been reported in studies with model fuels include molecular sieves, graphene, graphene-like materials, activated carbon, , metal–organic frameworks (MOFs), , and zeolites .…”

Section: Introductionmentioning

confidence: 99%

“…OEDS, on the other hand, is one of the feasible alternative options for the oil industry to eliminate sulfur compounds from fuel oils. − This technique involves using deep eutectic solvents for extraction and catalytic oxidation and is recognized for its environmentally friendly nature and mild reaction conditions. Nevertheless, the solvents used for the extraction can also dissolve in the fuel oils, resulting in both a loss of extractant and contamination of the fuel oil.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

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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Eco-friendly catalyst in ultrasonic-assisted oxidative desulfurization of dibenzothiophene compound

Abd El-Aty,

Alkahlawy,

Soliman

2024

Materials Chemistry and Physics

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Desulfurising Fuels Using Alcohol-Based Deep Eutectic Solvents Using Extractive Catalytic Oxidative Desulfurisation Method

Saini,

Yadav,

Singh

et al. 2024

Johnson Matthey Technology Review

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A special awareness has been given worldwide to clean the polluted environment. The environment is polluted mainly by greenhouse gases, emissions from transportation fuels, etc. Among them, sulfur compounds emitted from the emission of transported fuels significantly impact environmental pollution. It requires the removal of these sulfur compounds from transportation fuels. Refineries use the hydrodesulfurization (HDS) process to reduce these sulfur compounds from fuels. However, the HDS process requires high hydrogen pressure and temperature, making it cost-effective. An alternative to the HDS process is oxidative desulfurization via solvent extraction, which requires low-temperature operating conditions. In this regard, deep eutectic solvents (DESs) are attractive for researchers to desulfurize transportation fuels via solvent extraction due to their low-cost synthesis method. In our study, DESs were synthesized using phenylacetic acid and salicylic acid as hydrogen bond acceptors (HBAs) and tetraethylene glycol as hydrogen bond donor (HBD) in the mole ratio of 1:2. DESs were characterized by using FTIR spectra. Physico-chemical properties of DESs, such as density, viscosity, and refractive Index, were also measured. The synthesized DESs were performed to extract organosulfur compounds from model fuel and actual diesel. An oxidation study was carried out for model fuel and diesel, followed by solvent extraction using these synthesized DESs. The extraction efficiency for PAA/TTEG(1:2) and SAA/TTEG(1:2) was achieved as 50.16% and 38.89% for model fuel at a temperature of 30oC using a solvent to feed ratio of 1.0 while for diesel, it was 38% and 37%. However, it increased to 77%, 68%, and 54%, 73%, respectively, for PAA/TTEG(1:2) and SAA/TTEG(1:2) when the feedstocks were oxidized. These results showed better extraction performance of DES PAA/TTEG(1:2) than that of SAA/TTEG(1:2) at low-temperature 30oC using extractive combined oxidative desulfurization (ECODS). Hence, the DES synthesized using SAA and TTEG in the mole ratio of 1:2 works better as an extraction solvent for removing the organic sulfur compounds from fuels at low temperatures.

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Oxidative extractive desulfurization of fuel catalyzed via carboxylic acid and metal halides

Cited by 5 publications

References 35 publications

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

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

Eco-friendly catalyst in ultrasonic-assisted oxidative desulfurization of dibenzothiophene compound

Desulfurising Fuels Using Alcohol-Based Deep Eutectic Solvents Using Extractive Catalytic Oxidative Desulfurisation Method

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