Application of palladium supported on functionalized MWNTs for oxidative desulfurization of naphtha

Meman, Neda Mohammadi; ZareNezhad, Bahman; Rashidi, Alimorad; Hajjar, Zeinab; Esmaeili, Elaheh

doi:10.1016/j.jiec.2014.07.008

Cited by 22 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast to oxide supports, they have hydrophobic surface that provides good miscibility in model oil and promote the sulfidation process due to the limited metal-support interaction [9]. 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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…According to the mechanisms of catalytic reactions suggested by the researchers, NCs most often act as oxygen transfer agents, are converted into peroxide particles, or facilitate dissociation of the oxidant, and ensure selective oxidation of sulfur-containing compounds [25,27,43,48,53,57,[74][75][76][83][84][85]. It was shown using the examples of 4PW 11 Fe@PbO nanocatalyst and H 2 O 2 /CH 3 COOH oxidant that the kinetics of sulfur oxidation in the course of ODS is of the pseudo first-order type [27].…”

Section: Components For the Formation Of Nanostructured Catalysts Oxidants And Extractants For Oxidative Desulfurization Of Liquid Fuelsmentioning

confidence: 99%

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

et al. 2021

View full text Add to dashboard Cite

In this paper, the current advantages and disadvantages of using metal-containing nanocatalysts (NCs) for deep chemical oxidative desulfurization (ODS) of liquid fuels are reviewed. A similar analysis is performed for the oxidative biodesulfurization of oil along the 4S-pathway, catalyzed by various aerobic bacterial cells of microorganisms. The preferences of using NCs for the oxidation of organic sulfur-containing compounds in various oil fractions seem obvious. The text discusses the development of new chemical and biocatalytic approaches to ODS, including the use of both heterogeneous NCs and anaerobic microbial biocatalysts that catalyze the reduction of chemically oxidized sulfur-containing compounds in the framework of methanogenesis. The addition of anaerobic biocatalytic stages to the ODS of liquid fuel based on NCs leads to the emergence of hybrid technologies that improve both the environmental characteristics and the economic efficiency of the overall process. The bioconversion of sulfur-containing extracts from fuels with accompanying hydrocarbon residues into biogas containing valuable components for the implementation of C-1 green chemistry processes, such as CH4, CO2, or H2, looks attractive for the implementation of such a hybrid process.

show abstract

“…Catalysts containing complexes of transition metals (Nb, Mo) with crown ethers [24] are also being devised. Transition metal catalysts have a high content of the active component (16 wt.% Mo -4 wt.% W [16], 12 wt.% Mo [17]), whereas the content of noble metals does not exceed 1 wt.% (0.1 wt.% Pd [19], 0.015 wt.% Au [25], 1 wt.% Pd [20]). A combination of high adsorption capacity to the substrate and ability to activate the oxidant is a necessary condition for creating the catalytic systems efficient in ODS.…”

Section: Introductionmentioning

confidence: 99%

“…A combination of high adsorption capacity to the substrate and ability to activate the oxidant is a necessary condition for creating the catalytic systems efficient in ODS. It was shown [19] that carbon nanomaterials (CNMs) can serve as the promising materials for ODS. The oxidation of sulfur-containing compounds was studied in the presence of carbon nanotubes (CNTs) [26], reduced graphene oxide (rGO) [27], and Au/CNT composites [25].…”

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.

View full text Add to dashboard Cite

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.

show abstract

Application of palladium supported on functionalized MWNTs for oxidative desulfurization of naphtha

Cited by 22 publications

References 38 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

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

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

Contact Info

Product

Resources

About