Model Fuel Deep Desulfurization Using Modified 3D Graphenic Adsorbents: Isotherm, Kinetic, and Thermodynamic Study

Sedaghat, Sotoudeh; Ahadian, Mohammad Mahdi; Jafarian, M.; Hatamie, Shadie

doi:10.1021/acs.iecr.9b00250

Cited by 24 publications

(13 citation statements)

References 66 publications

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“…G bands can be attributed to sp 2 hybrid carbon atoms . The intensity ratios of D and G bond ( I D / I G ) values of different calcination temperatures are different, those of CN-900 being the largest, indicating the presence of abundant defects in CN-900 . These defects can lead to heterogeneity in the surface of the carbon structures, which is beneficial for the adsorption of DBT on its surface …”

Section: Resultsmentioning

confidence: 99%

New Type Nitrogen-Doped Carbon Material Applied to Deep Adsorption Desulfurization

Deng

2020

Energy Fuels

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In this research, we have prepared a new type of multistage aperture nitrogen-doped carbon materials [CN-x, (x = 600, 700, 800, 900, 1000)] by one-step carbonization at different calcination temperatures. The structure of the CN-x is characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller, Scanning electron microscopy, and Raman spectroscopy. The effects of pore structure, nitrogen morphology, and defects on the adsorption properties are analyzed. We have also studied the desulfurization activity of CN-x for dibenzothiophene (DBT). Experimental data show that CN-900 has very good adsorption desulfurization activity, exhibiting a theoretical Langmuir adsorption capacity of up to 37.28 mg/g. When the DBT concentration is 100 ppm, CN-900 reaches a DBT removal rate of over 99%. The effects of calcination temperature and nitrogen content on the adsorption properties of the CN-x are examined. The experimental results show that the nitrogen content is positively correlated with the adsorption performance. The cheap and readily available d-(+)-glucosamine hydrochloride is used as the precursor of the CN-x, and the adsorbent prepared by a simple one-step carbonization method has good application prospects in the desulfurization process.

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Section: Resultsmentioning

confidence: 99%

New Type Nitrogen-Doped Carbon Material Applied to Deep Adsorption Desulfurization

Deng

2020

Energy Fuels

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“…Graphene consists of a covalently bonded single layer of C atoms arranged in a two-dimensional (2D) honeycomb-like lattice nanostructure . Dependent upon the synthesis strategy, it has found many important tailored applications, such as in the design and development of sensors, electronics, corrosion inhibition, and oxidative reactions.…”

Section: Metal-free Catalytic Odsmentioning

confidence: 99%

“…Graphene consists of a covalently bonded single layer of C atoms arranged in a twodimensional (2D) honeycomb-like lattice nanostructure. 157 Dependent upon the synthesis strategy, it has found many important tailored applications, such as in the design and development of sensors, electronics, corrosion inhibition, and oxidative reactions. For application of graphene in ODS, controlled functionalization, thermal or chemical treatment with acids, or incorporation of suitable dopant elements are indispensable in tailoring the surface chemistry and stabilization of the active sites.…”

Section: Metal-free Catalytic Odsmentioning

confidence: 99%

Metal-Free Catalytic Oxidative Desulfurization of Fuels─A Review

Tanimu

Ganiyu

et al. 2022

Energy Fuels

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Overdependence of energy consumption around fossil fuels is threatening our environment from different anthropogenic emissions of pollutants. These pollutants (CO x , NO x , and SO x ) resulting from combustion activities of crude oil and petroleum products are life-threatening. Desulfurization of fuels is an important matter that constantly requires attention from the relevant stakeholders for environmental, economic, and social benefits. Hydrodesulfurization required to lower the sulfur content in the crude oil comes at high operating conditions and cost, especially toward achieving ultradeep desulfurization of <10 or 0 ppm as required for fuel cell catalytic converters. In the recent decades, oxidative desulfurization (ODS) is gaining fast interest among the few alternatives proposed as a complementary approach. This paper reviews the current advances in the metal-free catalytic ODS owing to the effectiveness and promising results in the light of safety, cost, and environmental concerns compared to conventional metal-containing catalytic ODS strategies. Special contributions related to graphitic materials, nitrides, carbides, ionic liquids, deep eutectic solvents, and porous organic polymers with respect to the broad classification of organic, inorganic, and hybrid (organic–inorganic) metal-free catalysts and their mechanism of catalyzing the oxidation process are thoroughly reviewed. The challenges, improvements, merits, and future prospects are discussed in the context of industrial feasibility for strategic plans and further studies.

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“…Heterogeneous catalysts are easily separated from the system at the end of the process and can be reused. Besides, they are environmentally friendly, have a long lifetime and can provide high activity and selectivity [16][17][18][19]. In the industrial world, the catalysts used must be pure, stable to heat, have a long lifetime, can be regenerated, are resistant to poisoning, are simple in the way they are made, and are easy to obtain and inexpensive.…”

Section: Introductionmentioning

confidence: 99%

Effect of Synthesis Method on the Catalytic Performance of Ca-Mg-Al Mixed Metal Oxide Nanocatalyst for Biodiesel Production from Waste Cooking Oil

Anbia

Sedaghat

et al. 2021

Advanced Energy Conversion Materials

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The synthesized nanomaterials by two different methods were used as a catalyst in the transesterification of waste cooking oil to produce biodiesel. For both environmental and economic reasons, it is beneficial to produce biodiesel from waste cooking oils. It is desirable to help solve waste oil disposal by utilizing its oils as an inexpensive starting material in biodiesel synthesis. The structure, morphology, and surface properties of resulting nanocatalysts were characterized by X-ray Fluorescence Spectroscopy (XRF), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Energy Dispersive X-ray Spectroscopy (EDX) and N2 adsorption-desorption isotherms. The synthesized nanocatalysts' efficiency in the production of biodiesel was studied by Gas Chromatography (GC) as well as leaching amounts of surface active components of each catalyst investigated by the EDX technique. The reactions were performed at 65°C using a 9:1 methanol to oil ratio for 3 h. The results indicate that the impregnated mixed metal oxide catalyst ( Ca-MgAl) shows a higher surface area and better mechanical strength than the totally co-precipitated mixed metal oxide catalyst (CaMgAl(O)). Although both of the fully co-precipitated and impregnated catalysts represented about 90% of fatty acid methyl esters (FAME) yield the leaching of active calcium component was significantly reduced from 45.8% in precipitated CaMgAl(O) to 8% for the impregnated Ca-MgAl catalyst. This improved structure represents the advantage of the impregnation technique to co-precipitation procedure for fabrication of robust nanostructures.

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Model Fuel Deep Desulfurization Using Modified 3D Graphenic Adsorbents: Isotherm, Kinetic, and Thermodynamic Study

Cited by 24 publications

References 66 publications

New Type Nitrogen-Doped Carbon Material Applied to Deep Adsorption Desulfurization

New Type Nitrogen-Doped Carbon Material Applied to Deep Adsorption Desulfurization

Metal-Free Catalytic Oxidative Desulfurization of Fuels─A Review

Effect of Synthesis Method on the Catalytic Performance of Ca-Mg-Al Mixed Metal Oxide Nanocatalyst for Biodiesel Production from Waste Cooking Oil

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