Catalytic Hydrodesulfurization of Gaseous Fuels with Autogenously Formed Hydrogen

Optenhostert, Thomas; Puthenkalam, Sissy; Stegmann, Niklas; Steffen, Michael; Schmidt, Wolfgang

doi:10.1002/cite.202000173

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…Also, the elemental mapping (SEM/EDS) was performed for silica before and after the impregnation in Figure (7). SEM gives the rock-like morphology for all the prepared samples.…”

Section: Semmentioning

confidence: 99%

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New Template in Synthesis of Copper Tungsten -Mesoporous Silica for Photo Oxidative-Desulfurization of Dibenzothiophene

Salem

Mohmed²,

Zaki³

2022

Preprint

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A novel CuWO4/SiO2 heterojunction catalyst was successfully synthesized using a new sulfonamide derivative. The physical characteristics of the prepared samples were investigated by TGA, XRD, FTIR, SEM, UV, PL, and XPS. The prepared catalysts were applied as a nano photocatalyst for photooxidative desulfurization of dibenzothiophene under visible light using hydrogen peroxide as an oxidant. The photocatalytic oxidative desulfurization performances of the prepared samples were investigated. Various factors as the reaction time, dibenzothiophene concentration, catalyst dose, and the oxidizing agent dose were also studied. The prepared photocatalyst has high desulfurization activity in the removal of DBT under mild conditions. Results showed that the CuWO4/SiO2 exhibited considerably higher activity than neat support SiO2. Such improved photocatalytic activity is mainly attributed to the efficient separation of photogenerated electron-hole pairs on CuWO4/SiO2 heterojunction. Moreover, the synergistic effects of this photocatalytic oxidation and the green oxidant hydrogen peroxide played an essential role in desulfurization. The reaction is pseudo-first-order and can reach 98.6 % removal of dibenzothiophene after 70 min and 97.2% after four cycles.

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“…Also, the elemental mapping (SEM/EDS) was performed for silica before and after the impregnation in Figure (7). SEM gives the rock-like morphology for all the prepared samples.…”

Section: Semmentioning

confidence: 99%

“…That process is more effective for the light sulfur compounds such as thiols, sul des, and thiophenes compounds and their derivatives. But; the more complicated sulfur compounds such as benzothiophene, dibenzothiophene, and their derivatives are very di cult to remove by hydro-treating process[6] [7].…”

Section: Introductionmentioning

confidence: 99%

New Template in Synthesis of Copper Tungsten -Mesoporous Silica for Photo Oxidative-Desulfurization of Dibenzothiophene

Salem

Mohmed²,

Zaki³

2022

Preprint

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“…To remove sulfur from petroleum fractions, petroleum refineries currently use HDS as a common method [11] [6]. Using hydrogen gas, the hydrodesulfurization reaction occurs in the presence of catalysts (Ni, Co, and Mo) at high temperatures (up to 400 °C) and pressures (up to 100 atm) [12]. It is a well-known method for getting rid of sulfur-containing organic molecules that are aliphatic and acyclic [13].…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of Basra Diesel Fuel by Emulsification – Adsorption Processes

Khudhur,

Hantosh,

Omer

2024

Journal of Petroleum Research and Studies

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In this study, the combined emulsification–adsorption processes were employed for the desulfurization of Basra diesel fuel. A high sulfur diesel fuel of 1.4538 wt% from the Basra refinery was oxidized effectively with H2O2 and Acetic acid (AcOH) as a catalyst to reduce sulfur content to 1.0875 wt% before being emulsified. The emulsification desulfurization (EDS) process using Alkyl benzene sulfonate (ABS) as a surfactant was optimized by 20 trails according to Response Surface Methodology (RSM). A 0.83886 wt% was achieved at the following optimum conditions: Surfactant concentration 20 wt.%, temperature 57.56 ᵒC, and homogenization speed 5695 rpm. The adsorptive desulfurization (ADS) process using activated bentonite clay was carried out in a batch system. The RSM was applied to determine the effect of contact time (1-10 hr), clay mass (5- 20 gm/50ml), and temperature (30-100 ᵒC) on the sulfur removal. Results showed that the sulfur content of 0.57 wt% was achieved at the following conditions: adsorption time 7.18 hrs., temperature 53.3 ᵒC, and clay mass 15.24 gm/ 50ml. The achieved sulfur removal efficiency was 23% and 32% for EDS and ADS respectively. The diesel fuel quality was studied by GC and IREX.

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“…Strict environmental regulations on sulfur contents of common fuels have brought about substantial efforts by industry to meet the new fuel requirements . In this concept, the hydrodesulfurization (HDS) process for reducing sulfur compounds has become very popular although it generally needs a high feed supply. , On one hand, reduced operational pressure typically leads to more economic feasibility of the HDS process compared to other rivals. On the other hand, commercial HDS catalysts often consist of Ni–Mo or Co–Mo loaded on an alumina support.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness Study of Mesoporous Size, Acidity, and Precursor Type on Characterization of Activated Carbon as an Fe–Mo Catalyst Support for Hydrodesulfurization of Heavy Naphtha

Soleymani

Karimzadeh

Rashidi³

et al. 2023

Ind. Eng. Chem. Res.

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The main goal of this research is to evaluate the effects of various parameters on the synthesis of a Fe−Mo catalyst supported on an in-house developed mesoporous activated carbon. For this purpose, mesoporous carbon has been prepared from grape branches and oil palm trunks under various activation times and drying periods. Consequently, optimum values of the aforementioned parameters have been obtained in order to synthesize an efficient support for developing a heavy naphtha hydrodesulfurization (HDS) catalyst. Subsequently, a mixture of Fe−Mo with a weight ratio of 1:3 has been loaded on the developed supports through a wet impregnation method. Various experimental analyses including X-ray diffraction (XRD), Fourier transform infrared (FTIR), Brunauer−Emmett−Teller (BET), temperature programmed desorption (TPD), temperature programmed reduction (TPR), field-emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence (XRF), thermogravimetric analysis (TGA), and energy dispersive X-ray (EDX) have been undertaken to determine the characteristics of synthetic catalysts and activated carbons. Once an appropriate catalyst has been synthesized on the basis of the experimental analyses, its performance for hydrodesulfurization of heavy naphtha has been investigated and has been compared to the efficiency of a catalyst with a commercial activated carbon support. The obtained results reveal that the sulfur conversions of heavy naphtha containing 900 ppm sulfur compounds at atmospheric pressure and at 340 °C are around 78 and 55% for the desulfurization process using the synthesized catalyst in the present work and the used commercial catalyst, respectively. It has also been found that a combination of grape branches and oil palm trunks contributes to an efficient mesoporous carbon structure, an acceptable thermal stability, and the development of a cost-effective support for the synthesis of an industrially viable HDS catalyst.

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Catalytic Hydrodesulfurization of Gaseous Fuels with Autogenously Formed Hydrogen

Cited by 10 publications

References 10 publications

New Template in Synthesis of Copper Tungsten -Mesoporous Silica for Photo Oxidative-Desulfurization of Dibenzothiophene

New Template in Synthesis of Copper Tungsten -Mesoporous Silica for Photo Oxidative-Desulfurization of Dibenzothiophene

Desulfurization of Basra Diesel Fuel by Emulsification – Adsorption Processes

Effectiveness Study of Mesoporous Size, Acidity, and Precursor Type on Characterization of Activated Carbon as an Fe–Mo Catalyst Support for Hydrodesulfurization of Heavy Naphtha

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