Preparation and characterization of nanocomposite of graphitic carbon nitride and TiO 2 as a porous support for nano catalyst for desulfurization process

Rafiee, Ezzat; Shahbazirad, Ayoob; Khodayari, Maryam

doi:10.1016/j.jscs.2017.04.006

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…Thus, proving that desulfurization and denitrogenation can be conducted simultaneously for the proposed system [76]. A similar study was performed previously by the same group [84] using an HPW/TiO 2 /GC catalyst. They have also concluded that the addition of nitrogenated compounds slightly impacts DBT removal.…”

Section: Carbon Materials In Odnsupporting

confidence: 74%

“…In turn, the HPW dispersion is improved, boosting the reaction [75]. Rafiee, Shahbazirad, and Khodayari (2017) also found that an increased dispersion of HPW over TiO 2 /g-C 3 N 4 resulted in higher desulfurization rates of a simulated fuel (DBT (C 0 = 500 ppm), BT (C 0 = 250 ppm) and Th (C 0 = 250 ppm) in EtOH/n-heptane) and for a real oil ([S] 0 = 500 or 1900 ppm) [84].…”

Section: Two-step Systemsmentioning

confidence: 99%

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Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

et al. 2021

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Sulfur (S) and nitrogen (N) are elements naturally found in petroleum-based fuels. S- and N-based compounds in liquid fuels are associated with a series of health and environmental issues. Thus, legislation has become stricter worldwide regarding their content and related emissions. Traditional treatment systems (namely hydrodesulfurization and hydrodenitrogenation) fail to achieve the desired levels of S and N contents in fuels without compromising combustion parameters. Thus, oxidative treatments (oxidative desulfurization–ODS, and oxidative denitrogenation-ODN) are emerging as alternatives to producing ultra-low-sulfur and nitrogen fuels. This paper presents a thorough review of ODS and ODN processes applying carbon-based materials, either in hybrid forms or as catalysts on their own. Focus is brought to the role of the carbonaceous structure in oxidative treatments. Furthermore, a special section related to the use of amphiphilic carbon-based catalysts, which have some advantages related to a closer interaction with the oily and aqueous phases, is discussed.

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Section: Carbon Materials In Odnsupporting

confidence: 74%

Section: Two-step Systemsmentioning

confidence: 99%

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

et al. 2021

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“…After the formation of reactive peroxo-Mo(VI) groups, a decrease in the Mo−N bond order with H 2 O 2 agreed with the theoretical observations. 88 Li et al 89 A novel heterogeneous catalyst (PW/TiO 2 /CN) was prepared by Rafiee et al 80 by immobilizing PW on TiO 2 /CN for ODS using H 2 O 2 as the oxidant. Reaction conditions: DBT Conc.…”

Section: Desulfurization Of Fuel Oilsmentioning

confidence: 99%

“…A novel heterogeneous catalyst (PW/TiO 2 /CN) was prepared by Rafiee et al by immobilizing PW on TiO 2 /CN for ODS using H 2 O 2 as the oxidant. Reaction conditions: DBT Conc.…”

Section: Applications Of G-c3n4 and Bn In Fuel Oil Processingmentioning

confidence: 99%

Perspectives on Advances in the Catalytic Desulfurization and Denitrogenation of Transportation Fuel Oils Using Graphitic Carbon Nitride and Boron Nitride

et al. 2022

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Expulsion of sulfur-containing compounds as well as nitrogen-containing compounds present in fuel oils is critical because it can cause numerous environmental problems and catalyst deactivation. Because of the limitations of the other catalysts and adsorbents used for desulfurization, a new type of carbon material, i.e., graphitic carbon nitride (g-C3N4), has emerged. It is similar in morphology to graphene having a two-dimensional structure and possessing a band gap of 2.7 eV and is an attractive catalyst attributed to its intriguing characteristics like high intrinsic photoresponsiveness and photoabsorption, semiconductive properties, and better stability. An ample amount of literature has been documented on g-C3N4 applied for the desulfurization and denitrogenation of fuel oils. Due to the analogy of boron with carbon materials, boron nitrides (BN) are also important. In materials chemistry, hexagonal BN (h-BN), often termed as “white graphene”, among the different phases of BN, is highly regarded due to adaptation of diverse morphologies such as nanotubes and nanosheets. BN has been recommended as an emerging and efficacious 2D material in catalysis because it possesses oxidative resistance, chemically inertness, a sp2-bonded layered structure, wide band gap, and higher thermal stability and conductivity. This review systematically encompasses the important reports documented on the applications of g-C3N4 and BNs in fuel oil processing including the synthesis, various properties, and fascinating experimental findings. Later on, key suggestions are put forward for future research directions and new technologies applying g-C3N4 and BN for the processing of transportation fuels. This review could act as a concentrated platform, as a quick access source and great degree of convenience, giving time effective routes for researchers to reported results and designs of novel and efficacious catalysts for the commercialization of desulfurization and denitrogenation technologies.

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“…The use and promotion of agricultural machinery make the heavy farm work transformed from manpower to mechanization, which greatly reduces the workload of farmers' hard work in the field . With the development of agricultural mechanization to more efficient and more convenient direction, agricultural machinery has been warmly welcomed by the masses of farmers (Amereh et al, 2018;Krauklis and Dreyer, 2018;Rafiee et al, 2017;Sandhu et al, 2018;Sautrot-Ba et al, 2018;Troujeni et al, 2018). The market prospect is very considerable, and it has further promoted the development of agricultural mechanization.…”

Section: Introductionmentioning

confidence: 99%

Vibration control method for a crawler-type combine harvester

Zhang

2018

Emir J Food Agric

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The traditional vibration control method for the crawler-type combine harvester based on experience is only a small piece of weight iron added to the main drive shaft of the cutter,and the mass of the weight iron is determined by the technician with experience, so the vibration control effect is not obvious. Therefore, a vibration control method for the new crawler-type combined harvester is put forward in this paper. The engine and cutting structure are the main sources of the crawler-type combine. According to the force analysis results of the cutting structure and the results of structural dynamics analysis, each acting force and moment of force are obtained, and the optimal combination scheme for calculating the position and mass of weight distribution is calculated to solve the cutting structure’s vibration of the crawler-type combine harvester. According to the vibration theory and modern design method, the vibration control of the crawler-type combine harvester engine is realized through the model analysis and the finite element calculation to establish the vibration damping model and design the parameters of the damping cushion. The experimental results show that the proposed method can effectively improve the vibration status of crawler-type combine harvesters, and the vibration level of harvesters is reduced by 50% to 80% in field operation.

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Preparation and characterization of nanocomposite of graphitic carbon nitride and TiO 2 as a porous support for nano catalyst for desulfurization process

Cited by 8 publications

References 36 publications

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

Perspectives on Advances in the Catalytic Desulfurization and Denitrogenation of Transportation Fuel Oils Using Graphitic Carbon Nitride and Boron Nitride

Vibration control method for a crawler-type combine harvester

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