Recent Advances in New Catalysts for Fuel Oil Desulfurization

Dou, Shuai‐Yong; Wang, Rui

doi:10.2174/1385272821666170102160038

Cited by 22 publications

(13 citation statements)

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“…The catalyst also plays a vital role in the oxidation desulfurization procedure. At present, the most commonly used catalysts are organic acid catalysts, polyoxometalate catalysts, ionic liquids, transition metal oxide catalysts, and inorganic non-metallic catalysts [16]. Among them, molybdenum oxide has received extensive attention.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

Chen

Tian

et al. 2021

Applied Sciences

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A mesoporous silica-supported molybdenum oxide catalyst with a cerium(Ce) modifier was prepared by in situ synthesis and used in a hydrogen peroxide (H2O2) system for the desulfurization of dibenzothiophene (DBT), benzothiophene (BT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) fuel oils. The catalytic performance of the catalyst was studied. The catalyst was characterized by Fourier Transform Infra-Red(FT-IR), X-ray diffraction (XRD), Brunner−Emmet−Teller (BET), and X-ray Photoelectron Spectroscopy(XPS). The influences of m(catalyst)/m(fuel oil), v(H2O2)/v(fuel oil), reaction temperature, and reaction time were investigated. The catalyst had excellent catalytic oxidation desulfurization performance under moderate operational conditions. The catalytic performance was in the order DBT > 4,6-DMDBT > BT. The kinetic analysis results showed that the reaction was a pseudo first-order kinetics process and the apparent activation energies of DBT, BT, and 4,6-DMDBT were 46.67 kJ/mol, 56.23 kJ/mol, and 55.54 kJ/mol, respectively. The reaction products of DBT, BT, and 4,6-DMDBT were DBTO2, BTO2, and 4,6-DMDBTO2, respectively. The recycling experiments indicated that DBT, BT, and 4,6-DMDBT removal could still reach levels of 94.0%, 63.0%, and 77.9% after five cycles.

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Section: Introductionmentioning

confidence: 99%

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

Chen

Tian

et al. 2021

Applied Sciences

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“…For this reason, high temperature and pressure, as well as costly hydrogen consumption, are necessary to achieve ultra-low deep desulfurization (that is, to reach a sulfur concentration lower than 10 ppm) [45]. The oxidative desulfurization (ODS) is considered the most promising technology alternative to HDS [46].…”

Section: Introductionmentioning

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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“…Large amounts of sulfur‐containing organic compounds are present in fuels, and the combustion of these compounds leads to a series of environmental problems, such as the formation of acid rain and smoke. Therefore the removal of sulfur‐containing organic compounds from fuels has become increasingly important and urgent in recent years …”

Section: Introductionmentioning

confidence: 99%

“…Therefore the removal of sulfur-containing organic compounds from fuels has become increasingly important and urgent in recent years. [1][2][3] The removal of sulfur-containing organic compounds under safe and green conditions is the key to solving the problem. Methods for removing sulfides from fuels have been rapidly developed.…”

Section: Introductionmentioning

confidence: 99%

Preparation of WO₃/CNT catalysts in presence of ionic liquid [C₁₆mim]Cl and catalytic efficiency in oxidative desulfurization

Wang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND With the strict regulation for environmental protection, the removal of sulfur compounds from fuels is becoming more and more urgent. Hydrodesulfurization is one of the most widely used technologies in chemical industry, but its application is limited because of the harsh reaction conditions and the low efficiency in removal of aromatic organic sulfide. In this work, catalysts consisting of tungsten trioxide immobilized on carbon nanotubes (WO3/CNT) in the presence of ionic liquid [C16mim]Cl were prepared for the oxidative desulfurization of aromatic organic sulfide. RESULTS The catalysts were systematically characterized by TG‐DSC, XRD, UV–visible, FTIR, Raman, SEM, TEM, XPS and BET. The dispersion of CNT and the crystal phase of WO3 on the carrier (CNT) were changed in the presence of ionic liquid [C16mim]Cl. The WO3 exists in tetrahedral form when the mass ratio of [C16mim]Cl to CNT is 2. The WO3/CNT catalyst demonstrates better activity in the oxidative desulfurization system, with the removal of dibenzothiophene (DBT) reaching 90.73% under optimal conditions. The oxidation process of DBT follows pseudo‐first‐order kinetics, and the activation energy is about 29.69 kJ mol−1. Dibenzothiophene sulfone (DBTO2) was determined to be the oxidative product of DBT. CONCLUSION The results illustrated that the oxidative desulfurization efficiency of different forms of WO3 loaded on the same carrier (CNT) followed the order tetrahedral WO3 > tetragonal phase WO3 > monoclinic phase WO3. © 2019 Society of Chemical Industry

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Recent Advances in New Catalysts for Fuel Oil Desulfurization

Cited by 22 publications

References 0 publications

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

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

Preparation of WO₃/CNT catalysts in presence of ionic liquid [C₁₆mim]Cl and catalytic efficiency in oxidative desulfurization

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Recent Advances in New Catalysts for Fuel Oil Desulfurization

Cited by 22 publications

References 0 publications

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Mesoporous Silica-Supported Molybdenum Oxide Modified by Ce

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

Preparation of WO3/CNT catalysts in presence of ionic liquid [C16mim]Cl and catalytic efficiency in oxidative desulfurization

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Preparation of WO₃/CNT catalysts in presence of ionic liquid [C₁₆mim]Cl and catalytic efficiency in oxidative desulfurization