Experimental and theoretical study of adsorptive interactions in diesel fuel desulfurization over Ag/MCM-41 adsorbent

Sales, Rafael Viana; Moura, Heloise Oliveira Medeiros de Araújo; Silva, Sérgio Ruschi Bergamachi; Souza, Miguel Ângelo Fonseca de; Campos, Leila Maria Aguilera; Rodríguez‐Castellón, Enrique; Carvalho, Luciene Santos de

doi:10.1007/s10450-019-00088-4

Cited by 13 publications

(7 citation statements)

References 49 publications

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“…In previous research, molecule simulation methods have been successfully applied to obtain the adsorption behaviours of sulphur‐ and nitrogen‐containing compounds on zeolites. [ 19,23–25 ] The DMol3 module in the Accelrys (now BIOVIA) Materials Studios 3.1 package was used to estimate interaction energies of quinoline onto adsorption sites using DFT. Exchange correlation function, basis set, and cluster model were used based on previous studies in Cu(I)Y adsorption simulation.…”

Section: Methodsmentioning

confidence: 99%

Quinoline adsorption from organic phase on X‐type zeolites: Experimental and DFT study

Ofoghi

Soleimani

Ravanchi³

2021

Can J Chem Eng

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In this study, the adsorptive denitrogenation from organic phase over zeolite adsorbents was studied by batch adsorption experiments. An appropriate amount of quinoline as a nitrogen‐containing compound was dissolved in iso‐octane and utilized as feed. The physicochemical properties of the adsorbents were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 physical adsorption, and energy‐dispersive X‐ray spectroscopy (EDS). The NiX zeolites showed a higher ion‐exchange degree and lower crystallinity. The maximum adsorption capacity and kinetic constant of CrX zeolite as compared to NaX zeolite were improved by 10% and 70%, respectively. Based on the kinetic and thermodynamic studies, it was found that CrX zeolite is a very efficient adsorbent for the removal of quinoline from iso‐octane. Also, the underlying mechanism for quinoline adsorption on parent X and ion‐exchanged zeolite was investigated by the density functional theory (DFT) method. DFT results indicated that among all the cations in zeolites, Cr3+ shows the strongest interaction with nitrogen in the quinoline molecule. The used parent NaX and ion‐exchanged zeolite can also be regenerated by ethanol elution and heating at 573 K, and 65% to 90% of the adsorption capacity of the zeolites was regenerated by these methods.

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Section: Methodsmentioning

confidence: 99%

Quinoline adsorption from organic phase on X‐type zeolites: Experimental and DFT study

Ofoghi

Soleimani

Ravanchi³

2021

Can J Chem Eng

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“…The desulfurization rate of CeVO 4 /BNNS can still reach above 91% after being recycled six times. Mesoporous silica, as one of the most widely studied ordered mesoporous materials, has the advantages of an adjustable pore structure and a large specific surface area (700-1300 m 2 /g) [114][115][116]. Therefore, mesoporous silica has unique properties in adsorption desulfurization.…”

Section: Other Adsorption Materialsmentioning

confidence: 99%

“…Liu et al [117] successfully obtained Ag/SBA-15 and Ag/MCM-41 adsorbents by using SBA-15 and MCM-41 mesoporous materials loaded with silver. The XPS results showed that the silver in Ag/SBA-15 and Ag/MCM-41 adsor- Mesoporous silica, as one of the most widely studied ordered mesoporous materials, has the advantages of an adjustable pore structure and a large specific surface area (700-1300 m 2 /g) [114][115][116]. Therefore, mesoporous silica has unique properties in adsorption desulfurization.…”

Section: Other Adsorption Materialsmentioning

confidence: 99%

New Adsorption Materials for Deep Desulfurization of Fuel Oil

Qiu,

Wang,

Wang

et al. 2024

Materials

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In recent years, due to the rapid growth of mankind’s demand for energy, harmful gases (SOx) produced by the combustion of sulfur-containing compounds in fuel oil have caused serious problems to the ecological environment and human health. Therefore, in order to solve this hidden danger from the source, countries around the world have created increasingly strict standards for the sulfur content in fuel. Adsorption desulfurization technology has attracted wide attention due to its advantages of energy saving and low operating cost. This paper reviewed the latest research progress on various porous adsorption materials. The future challenges and research directions of adsorption materials to meet the needs of clean fuels are proposed.

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“…The absence of peaks relative to the sample impregnated with silver (2AgSBA-15) may indicate that Ag species are highly dispersed and present high interaction with the mesoporous support. In addition, the size of these species may be below the equipment detection limit in the form of nanoparticles (<3 nm) [23][24][25].…”

Section: Characterization Of the Materialsmentioning

confidence: 99%

Effective Interactions of Ag Nanoparticles on the Surface of SBA-15 in Performing Deep Desulfurization of Real Diesel Fuel

et al. 2020

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SBA-15 materials as-synthesized and impregnated with Ag nanoparticles were applied to perform adsorptive desulfurization of real diesel fuel. High-angle annular dark-field scanning transmission electron microscopy and field-emission scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (HAADF-STEM-EDX and FESEM-EDX) and X-ray photoelectron spectroscopy (XPS) results confirmed that there is uniform distribution of Ag nanodomains on the surface and in the channels of a 2AgSBA-15 (2% Ag) sample. The interaction between sulfur compounds and adsorbent mainly occurred via π-complexation mechanisms, as observed via XPS and equilibrium data. The kinetic results for 2AgSBA-15 were better fitted to the pseudo-second-order model (R2 > 0.9999), indicating that the determining step of the adsorptive process is chemisorption, whereas the equilibrium results were better fitted to the Langmuir model (R2 > 0.9994), thus indicating that the adsorption occurs on the adsorbent surface monolayer with significant adsorption capacity (qm = 20.30 mgS/g), approximately two times greater than that observed for pure SBA-15. The mean desulfurization reached by the adsorbents was up to 86.8% for six recycling steps.

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Experimental and theoretical study of adsorptive interactions in diesel fuel desulfurization over Ag/MCM-41 adsorbent

Cited by 13 publications

References 49 publications

Quinoline adsorption from organic phase on X‐type zeolites: Experimental and DFT study

Quinoline adsorption from organic phase on X‐type zeolites: Experimental and DFT study

New Adsorption Materials for Deep Desulfurization of Fuel Oil

Effective Interactions of Ag Nanoparticles on the Surface of SBA-15 in Performing Deep Desulfurization of Real Diesel Fuel

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