Silicon doping effect on the properties of the hydrotreating catalysts of FCC feedstock pretreatment

Надеина, К.А.; Данилевич, В. В.; Казаков, М. О.; Romanova, T.S.; Gabrienko, Anton A.; Данилова, И. Г.; Pakharukova, V.A.; Николаева, О. А.; Gerasimov, Evgeny Yu.; Prosvirin, Igor P.; Кондрашев, Д. О.; Kleimenov, A. V.; Климов, О. В.; Носков, А. С.

doi:10.1016/j.apcatb.2020.119415

Cited by 24 publications

(5 citation statements)

References 58 publications

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“…Ti modification can significantly increase the proportion of MoS 2 species. The incorporation of Ti species can also facilitate the formation of MoS 2 active phases, which is in accordance with the literature [10,11]. Ti promotes the transformation of Mo-O-Al bonds formed by the interaction of γ-Al 2 O 3 with Mo to Mo-O-Ti bonds.…”

Section: Catalysts Characterizationsupporting

confidence: 90%

Study on titanium modification effect for dibenzothiophene HDS performance over NiMo catalyst for clean fuel production

zhang,

zhu,

yang

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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A series of titanium modified alumina materials were prepared by sol-gel method. NiMo/Al 2 O 3 catalysts were obtained by impregnating the titanium modified alumina into nickel-molybdenum precursor solution. The physicochemical properties of the catalysts were characterized using a series of characterization methods. The introduction of Ti optimized the surface acidity distribution of the catalyst, and formed a certain amount of B acid centers. It also weakened the metal-support interaction, which was beneficial to the formation of NiMoS II active phase with high intrinsic HDS activity. The reaction activity evaluation results showed that Ti modification significantly increased the proportion of DDS pathway in DBT hydrodesulfurization products.

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Section: Catalysts Characterizationsupporting

confidence: 90%

Study on titanium modification effect for dibenzothiophene HDS performance over NiMo catalyst for clean fuel production

zhang,

zhu,

yang

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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“…Investigation of the catalyst by nitrogen adsorption-desorption was made according to the procedure described in [28]. The catalyst was calcined at 550 °C before analysis.…”

Section: Catalyst Preparation and Characterizationmentioning

confidence: 99%

“…High-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) studies were performed for the catalyst sulfided in H2S flow. The description of the sulfidation procedure is given in [28,29].…”

Section: Catalyst Preparation and Characterizationmentioning

confidence: 99%

Testing conditions for CoMo HDS catalyst in the kinetic region: integrated approach using the math calculations and catalytic experiments

Mukhacheva¹,

Vatutina²,

Mik³

et al. 2023

Chim.Tech.Acta

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The main idea of the investigation was to define testing parameters with the lowest influence of internal and external diffusion on catalytic activity in hydrodesulfurization of dibenzothiophene. Traditional experimental methods were used to determine the conditions for the influence of internal and external diffusion. Simultaneous change of a linear feedstock rate and a catalyst loading at constant weight hour space velocity were used to determine the process temperature (240–260 °C) at which the impact of external diffusion is minimal. Catalytic tests, including the variation of the catalyst fraction size, were carried out to define the conditions with the lowest influence of internal diffusion. It was found that when the catalyst with the fraction size of 0.1–0.25 mm was used, the fluctuation of sulfur conversion was the smallest. Besides, to validate experimental results, the calculations were performed with mass balance equations and expressions used for HDS modeling. The resulting data and catalytic experiments demonstrated that the lowest influence of internal and external diffusion is achieved at a temperature process less than 260 °C and a catalyst fraction of 0.1–0.25 mm.

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“…[127,128] Generally, the nitrogen removal process of nitrogen-containing heterocyclic compounds may involve the main reactions including heterocyclic saturation, hydrogenation saturation of aromatic rings, hydrolysis, fracture of C-N and so on, among which the hydrolysis and rupture of C-N is a necessary step in the denitrification process, and the catalyst is required to have both hydrogenation and C-N fracture functions. [129,130] At present, related studies of denitrification reactions have been reported, and it is very important to study the structure-activity relationship between catalyst structure and denitrification performance at the atomic scale. [131,132] Shao et al [133] used programmed temperature reduction (TPR) to study the effects of different roasting and reduction temperatures on the catalytic performance of Ni-P/SiO 2 and Ni-P/Al 2 O 3 catalysts in hydrodenitrification (HDN) reactions.…”

Section: Denitrificationmentioning

confidence: 99%

Structural Design of Single‐Atom Catalysts for Enhancing Petrochemical Catalytic Reaction Process

Li,

Sun,

Wang

et al. 2024

Advanced Materials

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Petroleum, as the “lifeblood” of industrial development, is the important energy source and raw material. The selective transformation of petroleum into high‐end chemicals is of great significance, but still exists enormous challenges. Single‐atom catalysts (SACs) with 100% atom utilization and homogeneous active sites, promise a broad application in petrochemical processes. Herein, the research systematically summarizes the recent research progress of SACs in petrochemical catalytic reaction, proposes the role of structural design of SACs in enhancing catalytic performance, elucidates the catalytic reaction mechanisms of SACs in the conversion of petrochemical processes, and reveals the high activity origins of SACs at the atomic scale. Finally, the key challenges are summarized and an outlook on the design, identification of active sites, and the appropriate application of artificial intelligence technology is provided for achieving scale‐up application of SACs in petrochemical process.

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Silicon doping effect on the properties of the hydrotreating catalysts of FCC feedstock pretreatment

Cited by 24 publications

References 58 publications

Study on titanium modification effect for dibenzothiophene HDS performance over NiMo catalyst for clean fuel production

Study on titanium modification effect for dibenzothiophene HDS performance over NiMo catalyst for clean fuel production

Testing conditions for CoMo HDS catalyst in the kinetic region: integrated approach using the math calculations and catalytic experiments

Structural Design of Single‐Atom Catalysts for Enhancing Petrochemical Catalytic Reaction Process

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