Oxidation-extraction desulfurization of model oil over Zr-ZSM-5/SBA-15 and kinetic study

Lu, Chuanzhu; Fu, Hui; Li, Huipeng; Zhao, Hua; Cai, Tianfeng

doi:10.1007/s11705-014-1420-3

Cited by 7 publications

(7 citation statements)

References 32 publications

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“…A variety of studies have investigated the extraction of sulfur containing compounds from alkanes using ionic liquids and deep eutectic solvents. This has been proposed as a methodology to enable desulfurization of oil [5,6,7,8,9,10,11,12]. Despite numerous groups studying the partition coefficients of thiophenic compounds no calculations have been made for the thermodynamics of phase transfer.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

Abbott

Al-Murshedi

Alshammari

et al. 2017

Fluid Phase Equilibria

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Deep eutectic solvents (DESs) have been used for the purification of oils and the extraction of active ingredients from natural products but little is known about the mechanism of the extraction process. In this study a variety of molecular solutes are dissolved in alkanes and the thermodynamics of transfer into six DESs have been quantified. It is shown that the transfer of most solutes into the DES is endothermic and driven by entropy. The largest partition coefficients were demonstrated by the liquids with the lowest surface tensions and this is thought to arise because the enthalpy of hole formation controlling the rate of solute transfer. Accordingly, it was shown that the size of the solute has an effect on the partition coefficient with smaller solutes partitioning preferably into the DES. As expected, solutes capable of strongly hydrogen bonding partitioned much better into the DES as the enthalpy of transfer was negative.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

Abbott

Al-Murshedi

Alshammari

et al. 2017

Fluid Phase Equilibria

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“…Some ILs can act as both extractant and catalyst such as [Omim][HSO 4 ], [BPy][BF 4 ], and [EimC 4 SO 3 H]NTf 2 . Some ILs can be applied as only catalysts such as [Cn(mim) 2 ]Cl 2 /mFeCl 3 , [EMIM][NiCl 2 ], [EMIM][CoCl 2 ], [EMIM][MnCl 2 ], [PW 12 O 40 ], − …”

Section: Catalytic Oxidative–extractive Desulfurizationmentioning

confidence: 99%

“…Various types of extractants were surveyed for extracting sulfones. The extraction agents, including acetonitrile (MeCN), ,,,− ethanol, ,,, methanol, − propanol, , acetone, N , N -dimethylformamide (DMF), ,,,,− 2-ethoxyethanol (C 4 H 10 O 2 ), ,, γ-butyrolactone (C 4 H 6 O 2 ), ,,, dimethyl sulfoxid (DMSO), ,,,, ethylene glycol, ,, polyethylene glycol (PEG), , sulfolane, 1-ethyl-3-methyl imidazolium ethyl sulfate (EMIES), n -methyl-2-pyrrolidone (NMP), ,, n -heptane, n -hexane, caustic soda (NaOH), , furfural, , furfural alcohol, acetic acid, carbon tetrachloride (CCl 4 ), water, ,, [Omim]BF 4 , [Bmim]PF 6 , [C 8 mim]PF 6 , [C 4 mim]PF 6 , [CH 2 COOHPy][HSO 4 ], deep eutectic solvents, − ,, ethyl acetate, dichloroethane, dichloromethane, and the combination of extractants such as dichloroethane/methanol,…”

Section: Catalytic Oxidative–extractive Desulfurizationmentioning

confidence: 99%

“…Metal complexes are commonly prepared from the reaction of metal salts and organic ligands containing donor atoms, either at ambient temperature or under refluxing conditions in an appropriate solvent. 11 Various metal complexes such as FePc (NO 2 ) 4 , 66 FePc (NO 2 ) 3 -CF, 67 Fe-ZSM-5, 68 Zr-ZSM-5/SBA-15, 69 Ag-ZSM-5/SBA-15, 69 Ce-ZSM-5/SBA-15, 69 (Cu−Co) salenY, 70 V/P-CN, 71 CoMo/rGO, 72 and more were investigated in the ODS process. Lu et al 69 used three metal complexes as catalysts for the desulfurization of model feedstock (DBT in noctane with 1000 ppm sulfur) with an H 2 O 2 oxidant.…”

Section: Metal Complexes (Mc)mentioning

confidence: 99%

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Key Factors Affecting the Development of Oxidative Desulfurization of Liquid Fuels: A Critical Review

et al. 2021

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Complete and effective sulfur removal from liquid fuels is essential to meet the sulfur standard requirements. The oxidative desulfurization (ODS) process has been extensively used for the desulfurization of liquid fuels. In the current study, a comprehensive survey was conducted on the most important factors of ODS, including the types of catalysts, oxidizing agents, extraction solvents, liquid fuels, and process operating conditions. Various types of catalysts, nanocatalysts, magnetic catalysts, photocatalysts, electrocatalysts, biocatalysts, and emulsion catalytic systems have been studied in the ODS process. According to the obtained results, desulfurization catalysts were categorized into 11 groups, including metal oxides, metal complexes, metal free, titanosilicates, ionic liquids, polyoxometalates, metal−organic frameworks, porous aromatic frameworks, covalent organic frameworks, enzymes, and Fenton and Fenton-like catalysts. The advantages and drawbacks of the ODS catalysts were reviewed. The results indicate that the development of experimental design, modeling, and simulation in the ODS process helps to identify the most important variables, facilitate future research, and achieve maximum sulfur removal. Using technologies assisted with ODS such as ultrasound, cold plasma, microwave radiation, hydrodynamic cavitation, photo/light, electrochemistry, magnetic field, and biotechnology can improve sulfur removal and reduce reaction time.

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“…Therefore, the search for catalysts with high activity and good recovery remains essential. From this point of view, the creativity of the researchers to find innovative solutions, ranged from the preparation of micro-mesoporous composite molecular sieves (ZSM-5/SBA-15) doped with different metal ions as Zr, Ag, Ce, thus balancing advantages/disadvantages of both types of supports [198] to the immobilization of phosphotungstic acids (HPW) onto composite supports as pentaethylenehexaamine (PEHA)-preloaded acidic Zr/SBA-15 with short pore channels [199]. In the latter, the synergic role of the zirconium-ion-modified acidic SBA-15 and the auxiliary PEHA molecules toward the high dispersion and stabilization of HPW clusters is believed to endow the resulting nanocomposites with high reusability in comparison to the zirconium free materials.…”

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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Oxidation-extraction desulfurization of model oil over Zr-ZSM-5/SBA-15 and kinetic study

Cited by 7 publications

References 32 publications

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

Key Factors Affecting the Development of Oxidative Desulfurization of Liquid Fuels: A Critical Review

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

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