Sono-oxidative desulfurization of fuels using heterogeneous and homogeneous catalysts: A comprehensive review

Albayrak, Ali Tuğrul; Tavman, Aydın

doi:10.1016/j.ultsonch.2021.105845

Cited by 24 publications

(10 citation statements)

References 248 publications

(356 reference statements)

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“…In the UAOD process, sono‐catalytic activity cleans the catalyst surface from deposits, de‐agglomerates the catalyst particles and thus prevents deactivation. Our finding is in agreement with the literature [19a,b,c] . For example, Akbari et al.…”

Section: Resultssupporting

confidence: 94%

“…reported the MoO 3 /Al 2 O 3 catalyst during UAOD is more stable compared CODS process for 6 cycles [19b] . Therefore, it results that the UAOD is a more suitable process for the oxidation of DBT and DBT derivations in the fuels [19a,b,c] …”

Section: Resultsmentioning

confidence: 98%

“…The ultrasound enhances the mass transfer in heterogeneous systems and therefore improves the kinetics, affected by its chemical or mechanical factors [6a,7a] . Different types of catalysts have been investigated in the UAOD process [19a,b,c] . One of the catalysts that show the high activity of oxidation processes [16c,d,20–22] but have not been studied in the desulfurization process is Perovskite type oxides.…”

Section: Introductionmentioning

confidence: 99%

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LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

Esmaili

Hosseini

2023

ChemistrySelect

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LaMnxCo1‐xO3 (x=0, 0.25) perovskites were developed as novel nanocatalysts for the desulfurization of thiophenes compounds by catalytic oxidative desulfurization (CODS) and ultrasound‐assisted oxidative desulfurization (UAOD). The perovskites were synthesized by the sol‐gel auto‐combustion method and characterized by X‐ray diffraction (XRD), temperature programmed reduction (TPR), Scanning electron microscopy (SEM) and BET surface area. The experiments were designed by the Box‐Behnken method of response surface methodology. The catalytic experiments were designed by response surface methodology (RSM). LaMn0.25Co0.75O3 despite having a lower surface area rather than LaCoO3 exhibited superior activity due to easy reducibility and high surface electron density approved by TPR. Pareto analysis indicated that the DBT concentration had the most effect on the CODS process. Ultrasound waves enhanced the activity of the catalysts via the formation of hot spots as an accelerating and de‐agglomerating agent in the UAOD process, leading the LaMn0.25Co0.75O3 to be reusable at least for 5 cycles. A mechanism for DBT oxidation was proposed by the formation of DBT sulfone. Due to steric hindrance and the electron density of the sulfur atoms in thiophene derivatives, the following order resulted in their desulfurization rate: DBT>4‐MDBT>BT. The study indicated that perovskites could be novel and promising nanocatalysts for the desulfurization of fuels.

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Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

Esmaili

Hosseini

2023

ChemistrySelect

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“…30 32 Although the aforementioned methods were successful in raising desulfurization activity and perfecting the catalyst regeneration scheme, 33 the catalysts still carry out ODS reactions in solid form, leading to their relatively low utilization rates and slow mass transfer. 34 Since the 21st century, phase transfer catalytic reactions, where the solubility of catalysts is readily influenced by reaction conditions, have been extensively studied. 35 These fascinating reactions achieved the heterogeneous separation of the catalysts after the reaction while simultaneously guaranteeing the homogeneous catalysis of the reaction process, giving rise to high reactivity and straightforward catalyst regeneration processes.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Alkyl-quinoline and polyoxomolybdate were combined by Yue and colleagues to create the novel catalyst [C 8 quin] 4 Mo 8 O 26 , which can remove DBT in 90 min . Although the aforementioned methods were successful in raising desulfurization activity and perfecting the catalyst regeneration scheme, the catalysts still carry out ODS reactions in solid form, leading to their relatively low utilization rates and slow mass transfer …”

Section: Introductionmentioning

confidence: 99%

Efficient Oxidative Desulfurization over [Mo₈O₂₆]^4–-Based Hybrids: Phase Transfer Catalysis

Yue

Song²,

Pan

et al. 2023

Energy Fuels

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Organic–inorganic hybrid materials [Rmim]4Mo8O26 (1-alkyl-3-methylimidazolium polyoxomolybdate, alkyl = n-C4H9, n-C6H13, and n-C8H17) were prepared, and various characterization techniques have proven the hybrids’ successful synthesis. Meanwhile, the oxidative desulfurization (ODS) performance of both model and real diesel has been evaluated with H2O2 as the oxidant and acetonitrile (MeCN) as the extractant. Notably, these catalysts, initially insoluble in MeCN solution, fulfill a H2O2-responsive phase transfer into the MeCN phase to improve the ODS performance, facilitating the S compound extraction to the MeCN phase. After the ODS reaction, the hybrids precipitated from the MeCN phase, completed the heterogeneous separation, and regenerated simply by drying. Hybrid materials [Omim]4Mo8O26 (1-octyl-3-methylimidazolium polyoxomolybdate) with the longest alkyl chain displayed the highest desulfurization efficiency, achieving 99.8% dibenzothiophene (DBT) removal at the optimum reaction conditions of 50 °C, O/S = 5, Mo/S = 1:1, and V(MeCN/diesel) = 1:5. Even for real diesel, the hybrid exhibited more than 97% sulfur removal in diesel with sulfur contents of 3000 μg/g through the two-stage extraction-coupled oxidation desulfurization (ECODS) process. High catalytic recycling capability has been manifested by no obvious decrease in ODS activity after five cycles. This extraction-promoted H2O2-responsive phase transfer catalysis guarantees a promising industrial ODS system, not only substantially improves the catalytic desulfurization activity but also shows superior recycling performance with a simple catalyst regeneration method.

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Efficient catalytic oxidative desulfurization of liquid fuels over tungsten oxide supported on metakaolin surface

Ijadi,

Moradi,

Ghanadi

2024

ChemistrySelect

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A new high yield and inexpensive composite was fabricated by supporting tungsten oxide on metakaolin via the incipient wetness impregnation method to use in oxidative desulfurization reaction and produce ultra‐clean fuel. The prepared catalyst was characterized by various techniques like XRD, FTIR, FESEM, EDX and N2 adsorption–desorption isotherms, which indicated the catalyst was properly constructed. Initially, desulfurization was examined by loading different amounts of tungsten on the metakaolin surface. Based on the results, 15 % W/metakaolin showed high catalytic activity for the model and real fuels. Moreover, the influence of the main operating variables was studied through the Box–Behnken experimental design. The maximum sulfur removal reached to 99.3 % at a reaction temperature of 60 °C, oxidant to sulfur molar ratio12, catalyst dosage 0.04 g and oxidation time 40 min. Desulfurization from gasoline and gas oil with initial sulfur contents of 300 ppm and 7550 ppm was done under optimum conditions, which represented an efficiency of 60 % and 74 %, respectively. Performing the recycling tests proved the great durability of the catalyst after five runs. This research sheds light that the employed catalyst has excellent activity for industrial applications in the desulfurization process.

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Sono-oxidative desulfurization of fuels using heterogeneous and homogeneous catalysts: A comprehensive review

Cited by 24 publications

References 248 publications

LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

Efficient Oxidative Desulfurization over [Mo₈O₂₆]^4–-Based Hybrids: Phase Transfer Catalysis

Efficient catalytic oxidative desulfurization of liquid fuels over tungsten oxide supported on metakaolin surface

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Sono-oxidative desulfurization of fuels using heterogeneous and homogeneous catalysts: A comprehensive review

Cited by 24 publications

References 248 publications

LaMnxCo1‐xO3 (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

LaMnxCo1‐xO3 (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

Efficient Oxidative Desulfurization over [Mo8O26]4–-Based Hybrids: Phase Transfer Catalysis

Efficient catalytic oxidative desulfurization of liquid fuels over tungsten oxide supported on metakaolin surface

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LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

LaMn_xCo_1‐xO₃ (x=0, 0.25) Perovskites: Novel Nano Catalysts for Removal of Thiophene compounds in Fuels by Catalytic and Ultrasound‐assisted Oxidative Desulfurization

Efficient Oxidative Desulfurization over [Mo₈O₂₆]^4–-Based Hybrids: Phase Transfer Catalysis