Cu-Zn-Al-O catalysts for the oxidative desulfurization of dibenzothiophene, a typical sulfur-containing compound of the diesel fraction

Yashnik, S. A.; Керженцев, М. А.; Salnikov, Anton; Ismagilov, Z. R.; Bourane, Abdennour; Koseoglu, Omer

doi:10.1134/s0023158415040205

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…These properties of CNMs, as well as adsorption capacity, the absence of strong acid sites and ability to activate oxygen have drawn attention to their use in the process of selective oxidation of sulfur-containing compounds in fuels [17][18][19][20][21][22][23]. In contrast to oxide supports for which different compositions of active components were studied and favorable compositions were selected [24][25][26][27] the open literature on supported active species on CNMs for oxidative desulfurization is quite limited and their optimal type, content and dispersion is not fully understood so far.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

Матус¹,

Khitsova²,

Ефимова³

et al. 2019

Eurasian Chem. Tech. J.

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To develop new catalysts based on carbon nanomaterials with supported metal oxide nanoparticles for oxidative transformations of sulfur compounds, a series of metal oxide nanoparticle-decorated carbon nanotubes (MOx/CNTs) were prepared by incipient wetness impregnation at a variation of the active metal type (M = Ce, Mo, Cu). The thermal decomposition of bulk and CNT supported metal precursors used in the preparation of MOx/CNTs was analyzed under inert atmosphere employing several thermoanalytical techniques (thermogravimetry, differential thermogravimetry and differential scanning calorimetry) coupled with mass spectrometry. The thermolysis parameters of the bulk and supported metal precursors were compared and the effect of CNT support on the decomposition pattern of compounds was elucidated. It was established that the decomposition of metal precursors supported on CNTs was started and completed at temperatures of 15‒25 and 25‒70 °C lower, respectively, compared with the bulk active metal precursor. The enhancement of CNT support stability against thermal degradation is observed in the following row of metal cations: Ce < Cu < Мо < pristine and metal anions of precursor: nitrate < chloride < sulfate. The optimal mode of thermal treatment of catalyst and appropriate active metal precursors were selected for advanced synthesis of nanosized MOx/CNT catalyst.

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Section: Introductionmentioning

confidence: 99%

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

Матус¹,

Khitsova²,

Ефимова³

et al. 2019

Eurasian Chem. Tech. J.

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“…Sulfur-containing compounds are one of the main pollutants in diesel, and its existence will bring many adverse effects. The combustion of sulfur-containing compounds produces SO x , which can cause air pollution and acid rain [ 3 , 4 , 5 ]. In addition, the presence of sulfur compounds in diesel can also poison the catalytic converter and corrode internal refinery components.…”

Section: Introductionmentioning

confidence: 99%

“…The choice of oxidant and catalyst has an important influence on ODS performance. Oxygen (O 2 ), ozone (O 3 ), hydrogen peroxide (H 2 O 2 ), and organic peroxides are normally used to act as oxidants in ODS systems [ 3 , 17 ]. Among them, H 2 O 2 is widely used in the ODS process due to its strong oxidizing ability and environmental friendliness [ 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Efficient Diesel Desulfurization by Novel Amphiphilic Polyoxometalate-Based Hybrid Catalyst at Room Temperature

Zhao

Wang

et al. 2023

Molecules

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Amphiphilic hybrid catalysts were prepared by modifying [SMo12O40]2− with tetrabutylammonium bromide (TBAB), 1-butyl-3-methylimidazole bromide (BMIMBr) and octadecyl trimethyl ammonium bromide (ODAB), respectively. The prepared catalysts were characterized by IR, XRD, SEM, TG and XPS. The desulfurization performance of the catalysts was investigated in model oil and actual diesel using hydrogen peroxide (H2O2) as an oxidant and acetonitrile as an extractant. All catalysts exhibited favorable activity for removing sulfur compounds at room temperature. Dibenzothiophene (DBT) can be nearly completely removed using SMo12O402−-organic catalysts within a short reaction time. For different sulfur compounds, the [TBA]2SMo12O40 catalyst showed a better removal effect than the [BMIM]2SMo12O40 and [ODA]2SMo12O40 catalyst. The [TBA]2SMo12O40 dissolved in extraction solvent could be reused up to five times in an oxidative desulfurization (ODS) cycle with no significant loss of activity. The [BMIM]2SMo12O40 performed as a heterogeneous catalyst able to be recycled from the ODS system and maintained excellent catalytic activity. The catalysts showed a positive desulfurization effect in real diesel treatment. Finally, we described the ODS desulfurization mechanism of DBT using SMo12O402−-organic hybrid catalysts. The amphiphilic hybrid catalyst cation captures DBT, while SMo12O402− reacts with the oxidant H2O2 to produce peroxy-active species. DBT can be oxidized to its sulfone by the action of peroxy-active species to achieve ODS desulfurization.

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“…Economical advisability of this method decreases with stiffening of environmental requirements to the fuel quality, which makes it necessary to develop new approaches to the purification of hydrocarbon feedstock. Oxidative desulfurization (ODS) is among promising alternative methods for the removal of sulfur compounds and has considerable advantages over hydrodesulfurization [5][6][7][8][9][10][11][12][13][14][15]. The ODS process can be performed at lower temperatures and pressures and does not require the use of hydrogen, which is an expensive reagent.…”

Section: Introductionmentioning

confidence: 99%

The Development of Metal-Carbon Catalysts for Oxidative Desulfurization of Diesel Fractions

Ismagilov

Матус

Ефимова

et al. 2020

Eurasian Chem. Tech. J.

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Metal-carbon materials M/CNTs (M = Ce, Сu, Mo) were synthesized by incipient wetness impregnation and their physicochemical characteristics were studied using various methods (inductively coupled plasma optical emission spectrometry, thermal analysis coupled with mass spectrometry, low-temperature nitrogen adsorption, X-ray diffraction and structural analysis, scanning electron microscopy, and Raman spectroscopy). It was found that M/CNTs (M = Ce, Сu, Mo) are the mesoporous materials consisting of carbon nanotubes with deposited СeO2, Сu2O/Cu or МоО3/MoO2 particles, respectively. The dispersion of supported species and their deposition uniformity improve in the series Сu < Се < Мо. The type of metal was shown to affect thermal stability as well as the textural and structural properties of the samples. The thermal stability of materials increases in the series Ce < Cu ≈ Mo, which is caused by different redox properties of the metals and also by the composition of products of the metal precursor decomposition. It is promising to use the developed materials as the catalysts for deep purification of diesel fraction components from sulfur compounds.

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Cu-Zn-Al-O catalysts for the oxidative desulfurization of dibenzothiophene, a typical sulfur-containing compound of the diesel fraction

Cited by 12 publications

References 22 publications

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

Efficient Diesel Desulfurization by Novel Amphiphilic Polyoxometalate-Based Hybrid Catalyst at Room Temperature

The Development of Metal-Carbon Catalysts for Oxidative Desulfurization of Diesel Fractions

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