Ordered mesoporous carbon CMK-5 as a potential sorbent for fuel desulfurization: Application to the removal of dibenzothiophene and comparison with CMK-3

Nejad, N. Farzin; Shams, Esmaeil; Amini, Mohammad K.; Bennett, Craig

doi:10.1016/j.micromeso.2012.10.012

Cited by 100 publications

(35 citation statements)

References 59 publications

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“…As illustrated in Figure 8, Fe 3 O 4 @C-650 regenerated by thermal treatment (Figure 8, dark gray column) afforded 98 and 96% of the primary adsorption efficiency for the second and third runs, which are 29.53 and 28.96 mg DBT/g, respectively (Figure S8, dark gray column), while the corresponding values are 92, 91, and 87% for the successive recycle. The regeneration efficiencies herein are comparable to those of reported carbon adsorbents in the previous literature, 64−67 whereas the expected regeneration efficiency cannot be realized by the solvent extraction approach only.…”

Section: Resultssupporting

confidence: 85%

“…Among various methods employed in adsorptive desulfurization, solvent extraction and thermal treatment have been thought to be the commonly utilized regeneration method. 36,64,65 In this work, solvent extraction and thermal treatment were both employed to investigate the regeneration performance of Fe 3 O 4 @C-650. As for the solvent exaction method, after the completion of the first adsorption cycle, Fe 3 O 4 @C-650 was collected by an external magnet and washed by adding methanol as the extraction solvent.…”

Section: Resultsmentioning

confidence: 99%

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Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

Wang

Zhong

et al. 2019

ACS Omega

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Herein, we demonstrate a new class of core–shell magnetic carbon hybrid materials (Fe 3 O 4 @C) for remarkable adsorptive desulfurization of dibenzothiophene (DBT), which have been successfully prepared through hydrocarbonization of glucose on the surface of Fe 3 O 4 and the subsequent pyrolyzation process. The as-obtained Fe 3 O 4 @C retains amorphous nature of carbon shells with a large surface area and displays an increase of iron atoms as active sites under elevated pyrolyzation temperature which is favorable in the adsorption of sulfur-containing species through physical and chemical adsorption, respectively. We investigate the adsorption capacity and efficiency of Fe 3 O 4 @C as a magnetically adsorbent for the removal of DBT in model oils under various experimental conditions including the adsorbent obtained at different temperatures, the amount of adsorbents, the DBT initial concentration, the regeneration approach, as well as the interference species. Our results demonstrated that the as-obtained Fe 3 O 4 @C at 650 °C (Fe 3 O 4 @C-650) displays a remarkable estimated adsorption performance (57.5 mg DBT/g for 200 ppmw), extraordinary high desulfurization efficiency (99% for 200 ppmw), and a high selectivity for DBT compared with its derivatives. Moreover, Fe 3 O 4 @C can be recovered in a quite easy, economical, and eco-friendly manner by an external magnet after five cycles without significant weight loss, which significantly simplifies the operation procedure and favors the recycle of Fe 3 O 4 @C. Combined with the economic and eco-friendly merits, Fe 3 O 4 @C offers a new avenue to employ the magnetic carbon materials for industrial applications and provides a promising substitute for adsorptive desulfurization in view of academic, industrial, and environmental aspects.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

Wang

Zhong

et al. 2019

ACS Omega

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“…The nitrogen adsorption–desorption isotherm of CMK-5 powders is of type-IV with a hysteresis loop at relative pressures of 0.4–0.6, indicating the mesoporosity of CMK-5 (Figure 3a). 36,37 Specific surface area of CMK-5 is estimated to be 1483 m 2 /g, which is approximately 1.5 times higher than that of CMK-3. 19 CMK-5 has bimodal pore size distribution with two peaks at 3.2 and 4.2 nm corresponding to the inner pores and spacing between the carbon tubes, respectively (Figure 3b).…”

Section: Resultsmentioning

confidence: 95%

CMK-5-Based High Energy Density Electrical Double Layer Capacitor for AC Line Filtering

Park

Kim

2019

ACS Omega

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Compact electrical double layer capacitors (EDLCs) can be applied to the AC line filtering process and potentially replace conventional bulky aluminum electrolytic capacitors. However, to realize the AC line filtering application, the energy density of the EDLCs needs to be significantly increased while high power density is maintained. In this work, we demonstrate the EDLCs fabricated with ordered mesoporous carbon, CMK-5, and small amounts of single walled carbon nanotubes (SWNTs), which exhibit the highest areal energy density among various EDLCs reported so far and power performance sufficient for AC line filtering. High energy density of CMK-5/SWNT EDLCs can be attributed to high capacitance arising from the bimodal mesoporosity of CMK-5 and high operation voltage owing to the pores compatible with ion sizes in organic electrolytes. High power density is ascribed to the high electrical conductivity and straight ordered pore structure of CMK-5, enabling facile ion movements. Therefore, the carbon pore structure is one of the critical factors to be controlled for the enhancement of the overall performance of EDLCs for AC line filtering. Our demonstration would greatly contribute to the scientific and technological advancement of AC line filtering EDLCs.

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“…Because of the carbonaceous structural features, large specific surface area, pore volume, regular pore structure, and tunable porosity, they have been utilized as adsorbents and catalysts, such as electrocatalysts and supported metal catalysts [46–50] . To the best of our knowledge, there is no report to describe the application of CMK‐n materials for ADN of fuel in the literature, and the applying of these carbon replicas limited to adsorptive desulfurization (ADS) [51–53] …”

Section: Introductionmentioning

confidence: 99%

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

Delkhosh

Vahid²,

Baniyaghoob

et al. 2021

ChemistrySelect

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Nickel‐doped mesoporous carbon (MC) materials with 1, 4, and 7 wt. % nickel/MC, were synthesized and utilized for the elimination of indole, as representative of nitrogen‐containing compounds, from a model diesel fuel. Different instrumental techniques, including Fourier‐transform infrared (FT‐IR) spectroscopy, X‐Ray diffraction (XRD), N2 adsorption‐desorption analyses, field emission scanning electron microscopy (FE‐SEM), energy‐dispersive X‐ray spectroscopy (EDXS), and transmission electron microscopy (TEM) were used to characterize the synthesized Ni‐doped mesoporous carbons. The XRD and N2 adsorption‐desorption results revealed that all the nickel‐modified materials had ordered hexagonal mesostructures. Response surface methodology coupled with a three‐variable, three‐level Box‐Behnken design (BBD) involving three center points and one response was employed for evaluating the influence of the three input parameters, namely temperature (A), contact time (B), and Ni content (C) on the adsorption yield. The optimum removal efficiency (96.5 %) was obtained at 42 °C, 1 wt. % of Ni loading, and 55 min contact time; also, possible adsorption mechanisms might be due to van der Waals interaction, H‐bonding, and π‐complexation. Additionally, the equilibrium data were analyzed using Langmuir, Freundlich, and Temkin isotherm models, and the Freundlich isotherm model showed a better fit to experimental data (R2 =0.9978).

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Ordered mesoporous carbon CMK-5 as a potential sorbent for fuel desulfurization: Application to the removal of dibenzothiophene and comparison with CMK-3

Cited by 100 publications

References 59 publications

Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

CMK-5-Based High Energy Density Electrical Double Layer Capacitor for AC Line Filtering

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

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Ordered mesoporous carbon CMK-5 as a potential sorbent for fuel desulfurization: Application to the removal of dibenzothiophene and comparison with CMK-3

Cited by 100 publications

References 59 publications

Fe3O4@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

Fe3O4@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

CMK-5-Based High Energy Density Electrical Double Layer Capacitor for AC Line Filtering

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

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Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels

Fe₃O₄@C Core–Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels