Catalytic oxidative desulfurization of gasoline using phosphotungstic acid supported on MWW zeolite

Wang, Hanlu; Jibrin, Idris; Zeng, Xingye

doi:10.1007/s11705-019-1842-z

Cited by 25 publications

(7 citation statements)

References 78 publications

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“…The reaction kinetics of the ECOD process were significant parameters to explicate the oxidation of AHCs at four temperatures. The data are recorded in Table and were calculated by the following pseudo-first-order equations (eqs –) normald C C = prefix− k normald t ∫ C i C f true( normald C C true) = prefix− k ∫ 0 t normald t C t = C 0 e − k t where C 0 and C are the sulfur concentrations at time of 0– t (min) and k is the first-order rate constant (min –1 ). In a first-order reaction, the plot of ln( C t /C 0 ) against t , a linear fitting curve with slope k was obtained (Figure ).…”

Section: Resultsmentioning

confidence: 99%

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High Oxidation Desulfurization of Fuels Catalyzed by Vanadium-Substituted Phosphomolybdate@Polyaniline@Chitosan as an Inorganic–Organic Hybrid Nanocatalyst

et al. 2023

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From the environmental protection and human health perspectives, the design and synthesis of efficient and reusable oxidative desulfurization nanocatalysts has always been sought after by scientists and industries. In this regard, a new heterogeneous nanocatalyst (V-SPM@PANI@CH) was synthesized by immobilizing Keggin-type vanadium-substituted phosphomolybdate ([PVMo 11 O 39 ] 4− ) (named V-SPM) clusters on the surface of polyaniline (PANI) and chitosan (CH) polymers. The features of the assembled nanocatalyst were detected by Fourier transform infrared spectroscopy, ultraviolet−visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy, and energy-dispersive X-ray spectroscopy techniques in detail. The XRD studies indicated that the average crystallite size of V-SPM@ PANI@CH was estimated to be about 36 nm. The catalytic performance of V-SPM@PANI@CH was investigated in the extractive and catalytic oxidation desulfurization (ECOD) procedure of real and thiophenic model gasoline by H 2 O 2 /AcOH (volume proportion of 2:1) as an oxidizing system. The optimal desulfurization conditions for ECOD reactions were as follows: 50 mL of model/real gasoline, 0.1 g of V-SPM@PANI@CH, reaction time of 60 min, and reaction temperature of 35 °C. Under the experimental conditions outlined above and the designed ECOD system, the content of sulfur in real gasoline could decline from 0.4985 to 0.0193 wt %, which corresponds to an efficiency of 96%. Moreover, the removal percentage of aromatic hydrocarbons, including thiophene (Th), benzothiophene (BT), and di-benzothiophene (DBT) as model fuels decreases in the order of DBT ≥ BT > Th under identical operating conditions. High catalytic activity was maintained with only a slight loss during five cycles. This work offers the ECOD system (V-SPM@PANI@CH/AcOH/H 2 O 2 ) for the desulfurization of liquid fuels, which had a great repercussion on the ECOD efficiency.

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Section: Resultsmentioning

confidence: 99%

“…XXXX, XXX, XXX−XXX H T h i s c o n t e n t i s explicate the oxidation of AHCs at four temperatures. The data are recorded in Table4and were calculated by the following pseudo-first-order equations (eqs 3−5)64…”

mentioning

confidence: 99%

High Oxidation Desulfurization of Fuels Catalyzed by Vanadium-Substituted Phosphomolybdate@Polyaniline@Chitosan as an Inorganic–Organic Hybrid Nanocatalyst

et al. 2023

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“…Mostly in gasoline, sulfur compounds are simpler and more susceptible to oxidation compared to those contained in high boiling point fractions [ 52 ]. However, in the case of kerosene oil, not only the sulfur content is low but also the prevailing sulfur compounds are more complex, implying high resistance to oxidation and therefore lower level of sulfur removal [ 53 ]. The efficiency of the current catalytic ODS system surpasses those reported for ODS of modeled and real oil samples in terms of cost-effectiveness, simplified operation, and utilization of H 2 O 2 /HCOOH as oxidant.…”

Section: Resultsmentioning

confidence: 99%

Oxidative Desulfurization of Petroleum Distillate Fractions Using Manganese Dioxide Supported on Magnetic Reduced Graphene Oxide as Catalyst

et al. 2021

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In this study, oxidative desulfurization (ODS) of modeled and real oil samples was investigated using manganese-dioxide-supported, magnetic-reduced graphene oxide nanocomposite (MnO2/MrGO) as a catalyst in the presence of an H2O2/HCOOH oxidation system. MnO2/MrGO composite was synthesized and characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analyses. The optimal conditions for maximum removal of dibenzothiophene (DBT) from modeled oil samples were found to be efficient at 40 °C temperature, 60 min reaction time, 0.08 g catalyst dose/10 mL, and 2 mL of H2O2/formic acid, under which MnO2/MrGO exhibited intense desulfurization activity of up to 80%. Under the same set of conditions, the removal of only 41% DBT was observed in the presence of graphene oxide (GO) as the catalyst, which clearly indicated the advantage of MrGO in the composite catalyst. Under optimized conditions, sulfur removal in real oil samples, including diesel oil, gasoline, and kerosene, was found to be 67.8%, 59.5%, and 51.9%, respectively. The present approach is credited to cost-effectiveness, environmental benignity, and ease of preparation, envisioning great prospects for desulfurization of fuel oils on a commercial level.

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“…23 Their high solubility in aquatic and polar media also causes recovery and reuse problems, and consequently, their homogeneous catalytic application is severely limited. 24 One of the most efficient strategies to overcome the mentioned problems is to immobilize HPAs onto various solid supports, such as zeolites, 25,26 ordered mesoporous silica materials, 21,27 metal-organic frameworks, 28 metal oxides, 29 and carbon-based materials. 30,31 Among the materials mentioned above, carbon-based components are the most frequently used supports for HPA heterogenization.…”

Section: Introductionmentioning

confidence: 99%

Extractive-catalytic oxidative desulfurization of a model fuel over vanadium-containing heteropolyacids immobilized on amine-functionalized magnetic graphene oxide: a comparative study between Keggin and Dawson-type heteropolyacids and process optimization via response surface methodology

Mohammadi-Nejati

Shahhosseini

2023

Sustainable Energy Fuels

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Catalytic oxidative desulfurization of gasoline using phosphotungstic acid supported on MWW zeolite

Cited by 25 publications

References 78 publications

High Oxidation Desulfurization of Fuels Catalyzed by Vanadium-Substituted Phosphomolybdate@Polyaniline@Chitosan as an Inorganic–Organic Hybrid Nanocatalyst

High Oxidation Desulfurization of Fuels Catalyzed by Vanadium-Substituted Phosphomolybdate@Polyaniline@Chitosan as an Inorganic–Organic Hybrid Nanocatalyst

Oxidative Desulfurization of Petroleum Distillate Fractions Using Manganese Dioxide Supported on Magnetic Reduced Graphene Oxide as Catalyst

Extractive-catalytic oxidative desulfurization of a model fuel over vanadium-containing heteropolyacids immobilized on amine-functionalized magnetic graphene oxide: a comparative study between Keggin and Dawson-type heteropolyacids and process optimization via response surface methodology

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