Hydroconversion of Naphthalene in the Presence of NiMoS/NiWS-AlCl3 Catalyst Systems Derived from Mesoporous Aromatic Frameworks

Куликов, Л. А.; Boronoev, M. P.; Makeeva, D. A.; Nenasheva, M. V.; Egazar’yants, S. V.; Караханов, Э. А.

doi:10.1007/s10553-018-0876-0

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…25 Thus, after placing any of the sulfonated polymers in water, its color becomes light yellow; after drying the resulting "wet" material in a vacuum, it regains its dark blue color. We should note that such a change in the color of the material to dark blue is characteristic not only for sulfonated PAFs but also in Lewis acid/PAF composites, such as AlCl 3 /PAF-20 or FeCl 3 / PAF-20, 26,27 and even when PAFs are placed in a strong acid solution (HF, HCl, HBr, etc. ).…”

Section: Resultsmentioning

confidence: 99%

Metal-Free Oxidative Desulfurization Catalysts Based on Porous Aromatic Frameworks

Akopyan

Куликов

Polikarpova

et al. 2021

Ind. Eng. Chem. Res.

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Porous aromatic frameworks modified by sulfonic groups were synthesized and, for the first time, applied for the oxidative desulfurization of a model and a real fuel. The main factors affecting the process including the catalyst dosage, temperature, reaction time, oxidant dosage, and hydrogen peroxide concentration were investigated in detail. Under optimal conditions, dibenzothiophene (DBT) was removed completely. It was shown that the synthesized catalysts reduced the sulfur content in the straight-run gasoline fraction up to ultra-low values (7 ppm). Fuel fractions and their oxidation products were analyzed by two-dimensional gas chromatography with time-of-flight mass spectrometry detection. No byproducts of hydrocarbon oxidation were found, which confirms the high selectivity of oxidation in the presence of synthesized catalysts. These catalysts retain their activity in DBT oxidation for at least five cycles.

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Section: Resultsmentioning

confidence: 99%

Metal-Free Oxidative Desulfurization Catalysts Based on Porous Aromatic Frameworks

Akopyan

Куликов

Polikarpova

et al. 2021

Ind. Eng. Chem. Res.

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“…The physical and chemical properties of PAFs have been widely studied in a large number of works. ,− Thus, it was shown that these type of materials possessed high resistance to aggressive environments, thermal stability up to 400–450 °C, good gas uptake properties, and had the ability to stabilize metal complexes and nanoparticles. An important characteristic of PAFs, determining their unique properties, is their porous structure, as well as the associated features.…”

Section: Resultsmentioning

confidence: 99%

Catalysts Based on Porous Polyaromatic Frameworks for Deep Oxidative Desulfurization of Model Fuel in Biphasic Conditions

Куликов

Akopyan

Polikarpova

et al. 2019

Ind. Eng. Chem. Res.

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The first example of an application of porous aromatic frameworks (PAFs) in synthesis of catalysts for oxidative desulfurization was described. The mesoporous aromatic framework with a diamondlike structure was modified with tungsten and molybdenum carbonyls, and synthesized catalysts were successfully used for low-temperature oxidation of organic sulfides. The obtained materials were characterized by low-temperature nitrogen adsorption/desorption, transmission electron microscopy, atomic emission spectroscopy, and X-ray photoelectron spectroscopy techniques. It was shown that the polymer did not undergo oxidation and retained its structure in the presence of hydrogen peroxide and tert-butyl hydroperoxide. The catalysts possessed high activity because of the hydrophobic nature of the carrier and their high surface area.

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“…Thus, the presence of acid is necessary for the acceleration of these processes. In previous work, we showed that the introduction of a PAF-AlCl 3 catalyst enhanced the cracking ability of PAF-NiMeS catalytic systems [19]. Herein we continue to investigate the properties of PAF-NiMeS/PAF-AlCl 3 catalytic systems for the hydrotreating of substituted naphthalenes and LCO, particularly to ascertain the influence of the position and length of alkyl-groups in naphthalene molecules on the activity of the catalysts in cracking, isomerization and dearomatization reactions.…”

Section: Introductionmentioning

confidence: 88%

“…The obtained values for the binding energies were compared with those reported in the literature [23,24]. Recently, we described the synthesis of a PAF-AlCl 3 catalyst and its use in the hydrogenation-hydrocracking of naphthalene [19]. It is well known that Lewis acids, particularly aluminum chloride, react with aromatic substances and form complexes of the type PhH σ+ -(AlCl 3 ) σ− through charge-transfer mechanisms [25][26][27].…”

Section: Characterization Of Precursors and Catalystsmentioning

confidence: 97%

Hydrotreating of Light Cycle Oil over Supported on Porous Aromatic Framework Catalysts

et al. 2018

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The hydroprocessing of substituted naphthalenes and light cycle oil (LCO) over bimetallic Ni-W-S and Ni-Mo-S catalysts that were obtained by decomposition of [N(n-Bu)4]2[Ni(MeS4)2] (Me = W, Mo) complexes in situ in the pores of mesoporous aromatic frameworks (PAFs) during the reaction, was studied. The promotion of acid-catalyzed processes by PAF-AlCl3, synthesized by impregnation of a PAF with AlCl3 from its toluene solution, was investigated. It has been found that Ni-W-S catalytic systems were more active in the hydrodearomatization reactions, while Ni-Mo-S catalytic systems were more active in hydrodesulfurization and hydrocracking reactions. The introduction of sulfur into the reaction medium enhanced the activity of the catalysts and the presence of PAF-AlCl3 led to an acceleration of the hydrocracking processes.

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Hydroconversion of Naphthalene in the Presence of NiMoS/NiWS-AlCl3 Catalyst Systems Derived from Mesoporous Aromatic Frameworks

Cited by 5 publications

References 10 publications

Metal-Free Oxidative Desulfurization Catalysts Based on Porous Aromatic Frameworks

Metal-Free Oxidative Desulfurization Catalysts Based on Porous Aromatic Frameworks

Catalysts Based on Porous Polyaromatic Frameworks for Deep Oxidative Desulfurization of Model Fuel in Biphasic Conditions

Hydrotreating of Light Cycle Oil over Supported on Porous Aromatic Framework Catalysts

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