Ultra-deep oxidative desulfurization of fuel with H2O2 catalyzed by phosphomolybdic acid supported on silica

Tian, Yuhui; Wang, Guanghui; Long, Juan; Cui, Jianlei; Jin, Wei; Zeng, Danlin

doi:10.1016/s1872-2067(16)62558-5

Cited by 36 publications

(14 citation statements)

References 37 publications

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“…Tian et al immobilized phosphomolybdic acid (HPMo) on silica as a catalyst in the presence of H 2 O 2 for 100% removal of DBT at 55 °C and 100% removal for BT at 60 °C from model fuel. This catalyst was separated by centrifugation and dried at 105 °C in a vacuum oven for 12 h. Experiments showed that DBT and BT removal efficiency could still reach 95.2% and 95.7% after 10 cycles.…”

Section: Regenerationmentioning

confidence: 99%

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Ahmadian

Anbia

2021

Energy Fuels

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Nowadays, desulfurization of liquid fuels is inevitable because of strict environmental and industrial regulations on liquid fuels specifications. Hydrodesulfurization (HDS) technology has been used widely to produce fuels with ultralow sulfur content (S ≤ 10 ppm). However, this method is not effective enough for removing refractory sulfur compounds (e.g., benzothiophene, dibenzothiophene, and their derivatives). Consequently, alternative or supplementary desulfurization methods have been rapidly developed in recent years. The oxidative desulfurization (ODS) process is a promising method with high selectivity, low cost, mild reaction conditions, and high efficiency. In the past few decades, the ODS process of fuels by polyoxometalates (POMs) as catalysts have attracted considerable attention, resulting in different works have been published due to their strong acidity, fast and reversible multielectron redox properties, tunable redox properties, as well as thermal, hydrolytic, and oxidative stability. In this review, the removal of S-compounds from fuel oils is investigated via the ODS process using homogeneous and heterogeneous polyoxometalate catalysts. Moreover, the advantages and problems of each system are discussed. Various techniques for reducing their noticeable drawbacks are also presented. Finally, the regeneration of POM catalysts, as an important step in industrial applications, is examined.

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Section: Regenerationmentioning

confidence: 99%

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Ahmadian

Anbia

2021

Energy Fuels

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“…On the one hand, the side reaction occupied the active center and increased the consumption of H 2 O 2 . 34 On the other hand, a percentage of the hydrophilic catalyst was transferred to the water phase, thus reducing the catalyst dispersed in the oil phase. 34 This resulted the reduction of the desulfurization rate.…”

Section: Oxidative Desulfurization Of the Model Fuel Oilmentioning

confidence: 99%

Ultra-deep oxidative desulfurization of fuel with H₂O₂catalyzed by molybdenum oxide supported on alumina modified by Ca²⁺

et al. 2017

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“…Transition metal and lanthanides are the most commonly used modifiers. Tian [21] et al reported that La 3+ was used as a modifier to prepare a phosphomolybdic acid-supported Silicon dioxide(SiO 2 ) catalyst. The results illustrated that the catalytic performance was further improved after the modifier was added in comparison to before.…”

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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Ultra-deep oxidative desulfurization of fuel with H2O2 catalyzed by phosphomolybdic acid supported on silica

Cited by 36 publications

References 37 publications

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Ultra-deep oxidative desulfurization of fuel with H₂O₂catalyzed by molybdenum oxide supported on alumina modified by Ca²⁺

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

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Ultra-deep oxidative desulfurization of fuel with H2O2 catalyzed by phosphomolybdic acid supported on silica

Cited by 36 publications

References 37 publications

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Ultra-deep oxidative desulfurization of fuel with H2O2catalyzed by molybdenum oxide supported on alumina modified by Ca2+

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

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Ultra-deep oxidative desulfurization of fuel with H₂O₂catalyzed by molybdenum oxide supported on alumina modified by Ca²⁺