Selective oxidation of refractory sulfur compounds for the production of low sulfur transportation fuel

Jeong, Kwang-Eun; Kim, Tae‐Wan; Kim, Joowan; Chae, Ho‐Jeong; Kim, Chul‐Ung; Park, Young-Kwon; Jeong, Soon‐Yong

doi:10.1007/s11814-013-0025-8

Cited by 38 publications

(23 citation statements)

References 80 publications

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“…The oxidation reactivity of the RTCs was decreased in the order DBT >BT >Th. Besides, the partial electron charge on the sulfur atom of these compounds was reported in the literature as DBT (5.758), BT (5.739) and Th (5.696) . The lowest reactivity of Th in the ODS treatments resulted from its low electron density.…”

Section: Resultsmentioning

confidence: 94%

Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Rezvani

Khandan

2018

Applied Organom Chemis

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A new nanocomposite (FeW 11 V@CTAB-MMT) was designed on the basis of vanadium-substituted tungstoferrate (FeW 11 V) and cetyltrimethylammonium bromide-modified montmorillonite (CTAB-MMT) as an efficient nanocatalyst for oxidative desulfurization (ODS) of gasoline. The synthesized catalyst was characterized using various techniques. To evaluate the catalytic activity of FeW 11 V@CTAB-MMT, ODS was carried out using a mixture of aqueous acetic acid and hydrogen peroxide solution as an oxidant and acetonitrile solvent as an extractant. The ODS results revealed that the removal efficiencies of thiophene, benzothiophene and dibenzothiophene were more than 97% in the presence of the FeW 11 V@CTAB-MMT catalyst at 35°C after 1 h. Kinetics of the catalytic ODS reactions was found to be pseudo-first-order. The prepared heterogeneous catalyst was found to be reusable for five runs without a discernible decrease in its activity. The current research provides insight into a new catalytic system for the ODS process for the deep removal of hazardous sulfur molecules from gasoline.

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Section: Resultsmentioning

confidence: 94%

Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Rezvani

Khandan

2018

Applied Organom Chemis

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“…The lowest reactivity of Th in the ODS can be explained by its low electron density (5.696). Compared to Th, the high reactivity of DBT is due to the electronic donation effect of the alkyl groups surrounded the sulfur atom that improves the electron density (5.758) …”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Rezvani

Maleki

2019

Applied Organom Chemis

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In this work, a new nanocatalyst, Fe2W18Fe4@NiO@CTS, was synthesized by the reaction of sandwich‐type polyoxometalate (Fe2W18Fe4), nickel oxide (NiO), and chitosan (CTS) via sol–gel method. The assembled nanocatalyst was systematically characterized by FT‐IR, UV–vis, XRD, SEM, and EDX analysis. The catalytic activity of Fe2W18Fe4@NiO@CTS was tested on oxidative desulfurization (ODS) of real gasoline and model fuels. The experimental results revealed that the levels of sulfur content and mercaptan compounds of gasoline were lowered with 97% efficiency. Also, the Fe2W18Fe4@NiO@CTS nanocatalyst demonstrated an outstanding catalytic performance for the oxidation of dibenzothiophene (DBT) in the model fuel. The major factors that influence the desulfurization efficiency and the kinetic study of the ODS reactions were fully detailed and discussed. The probable ODS pathway was proposed via the electrophilic mechanism on the basis of the electrophilic characteristic of the metal‐oxo‐peroxo intermediates. The prepared nanocatalyst could be reused for 5 successive runs without any appreciable loss in its catalytic activity. As a result, the current study suggested the potential application of the Fe2W18Fe4@NiO@CTS hybrid nanocatalyst as an ideal candidate for removal of sulfur compounds from fuel.

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“…their combination on alumina as catalyst at a temperature and pressure of > 300°C and 20-100 atm, respectively (Jeong et al 2013). Although HDS has been proven to be efficient for sulfur removal down to 500 ppm for gasoline and diesel, it becomes inefficient for deep desulfurization down to 15 or 10 ppm.…”

Section: Refractory S (%)mentioning

confidence: 99%

“…ODS is considered a promising desulfurization technology due to the fact that it can be operated at low temperature and atmospheric pressure and does not require the use of hydrogen. An interesting fact about ODS is its capability to easily remove refractory sulfur compounds due to the presence of high electron density on the sulfur atom (Otsuki et al 2000, Jeong et al 2013. The relative ease with which ODS can be integrated with all the desulfurization technologies mentioned above and the relative ease with which refractory sulfur can be removed by ODS due to the fact that ODS reverses the order of reactivity of BT derivative in HDS make it an attractive option, which can complement HDS in order to achieve the stringent sulfur regulations.…”

Section: Introductionmentioning

confidence: 99%

Deep oxidative desulfurization of liquid fuels

Mjalli

Ahmed

Al-Wahaibi

et al. 2014

Reviews in Chemical Engineering

167

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Increase in energy demand and consumption has been accompanied by a corresponding increase in sulfur emissions. These pollutants have both health and economic consequences. Furthermore, it significantly reduces the efficiency of advanced emission control systems of diesel engines, thereby indirectly causing more harm to the environment. This resulted in stringent sulfur emission limit down to about 15 ppm or less and in turn served as an incentive for research into alternative sulfur reduction technologies. Although feasible improvements to hydrodesulfurization are currently under investigation, adsorptive, extractive, oxidative and biodesulfurization have also been studied in recent years. Oxidative desulfurization appears to be one of the most promising desulfurization technologies due to its broadness and compatibility with other technologies such as extractive, adsorptive and biodesulfurization. The advent of ionic liquids as extraction solvents has made this even more so. This work, therefore, reviews the different approaches and investigations carried out on oxidative desulfurization while identifying research gaps and giving important recommendations.

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Selective oxidation of refractory sulfur compounds for the production of low sulfur transportation fuel

Cited by 38 publications

References 80 publications

Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Deep oxidative desulfurization of liquid fuels

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Selective oxidation of refractory sulfur compounds for the production of low sulfur transportation fuel

Cited by 38 publications

References 80 publications

Synthesis and characterization of a new nanocomposite (FeW11V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Synthesis and characterization of a new nanocomposite (FeW11V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Facile synthesis of inorganic–organic Fe2W18Fe4@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel

Deep oxidative desulfurization of liquid fuels

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Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Synthesis and characterization of a new nanocomposite (FeW₁₁V@CTAB‐MMT) as an efficient heterogeneous catalyst for oxidative desulfurization of gasoline

Facile synthesis of inorganic–organic Fe₂W₁₈Fe₄@NiO@CTS hybrid nanocatalyst induced efficient performance in oxidative desulfurization of real fuel