Study of adsorption properties of synthesized mesoporous silica doped with dysprosium and modified with nickel

Filippova, Elena O.; Шафигулин, Р. В.; Tokranov, A. A.; Shmelev, Alexander A.; Буланова, А. В.; Пимерзин, А. А.; Karaev, Alexander A.

doi:10.1002/jccs.201900440

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…In this regard, interest in mesostructured silica materials has increased in recent years, because they have a number of useful properties specific to carriers and adsorbents. Thus, they have adjustable size (from 2 to 50 nm), regular cylindrical pores, high chemical and thermal stability, large surface area (700-1500 m 2 /g) [30][31][32][33][34][35].…”

Section: The Nature Of Catalystsmentioning

confidence: 99%

The Scientific Basis of Industrial Application of the Process of Selective Hydrogenation of Benzene in Different Catalytic Systems

Shikhverdieva,

Mammedova,

Zeynalov

2023

AChJ

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Pollution of the environment with substances obtained in the production of oil and other products in various industries forces us to take measures to solve environmental problems that have become relevant in recent years. Arenes, belonging to the class of petroleum-derived aromatic hydrocarbons, are very life-threatening substances due to their carcinogenic effects. In this regard, one of the important issues is the release of benzene, a special representative of arenes, from its carcinogenic effect as a toxic and volatile compound, and its use in the production of cyclohexane, which is the main raw material for the production of caprolactam and nylon. The selectivity of the hydrogenation of benzene and the high yield of cyclohexane, the target product, depend on the reaction conditions and the choice of catalysts. In recent years, the application of polymer and zeolite nanocomposite catalysts, as well as modified metal polymer-based catalysts, in obtaining highly active and selective catalysts for the purpose of effective implementation of aromatic hydrocarbon hydrogenation processes is of great interest. Thus, naphthenic hydrocarbons are considered the main starting materials for the synthesis of various classes of compounds. Derivatives of these compounds are used in the pharmaceutical industry as special-purpose caprolactam, adipic acid, cyclohexanone, as a solvent for essential oils, varnishes, paints, as an extractant, etc. are used in synthesis. As a result of investigating the catalytic properties of polymer-mineral catalysts in the benzene hydrogenation reaction, it was determined that these reactions show selectivity in the direction of cyclohexane formation in narrow-pore zeolites (mordenite, clinoptilolite)In the presented work, the main information was collected by analyzing the literature on the work carried out in this direction

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Section: The Nature Of Catalystsmentioning

confidence: 99%

The Scientific Basis of Industrial Application of the Process of Selective Hydrogenation of Benzene in Different Catalytic Systems

Shikhverdieva,

Mammedova,

Zeynalov

2023

AChJ

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“…The catalyst activity is greatly influenced by the support; therefore, mesoporous silica gels with a high surface area, large pore volume, and the possibility of modification are of great interest to researchers in recent decades. [1][2][3][4][5][6][7][8][9][10] The formation of metal nanoparticles directly in the pores of the polymer makes it possible to obtain hybrid polymer-inorganic materials characterized by a regular distribution of nanoparticles in the bulk.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous silica gel doped with dysprosium and modified with copper: A selective catalyst for the hydrogenation of 1‐hexyne/1‐hexene mixture

Tokranova

Tokranov

Vinogradov

et al. 2022

Int J of Chemical Kinetics

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The selective hydrogenation of 1-hexyne/1-hexene mixture in the temperature range 100-140 • C and a hydrogen pressure of 3 atm was studied on catalysts based on mesoporous silica gel modified with copper and mesoporous silica gel doped with dysprosium and modified with copper. The physicochemical characteristics of the samples were studied by low temperature nitrogen adsorption-desorption method, scanning electron microscopy (SEM), X-ray fluorescence (XRF), and inductively coupled plasma mass spectrometry (ICP-MS). In addition, theoretical calculations of the entropies and energies of formation of activated complexes of the hydrogenation reactions of 1-hexyne and 1-hexene in the gas phase have been calculated with Gaussian 09 software using the density functional theory (DFT) B3LYP/cc-pVQZ method. It was found that the presence of dysprosium in the structure of mesoporous silica gel leads to an increase in catalytic activity in the hydrogenation of 1-hexyne. Moreover, it was shown that mesoporous silica gel modified with copper has the highest selectivity for hexene-1 in the hydrogenation reaction of 1-hexyne/1-hexene mixture at 130 • C.

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Selective hydrogenation of 1-hexyne/1-hexene mixture on mesoporous silica gel doped with dysprosium, lanthanum, and modified with silver

Tokranov

Tokranova

Shagifulin

et al. 2023

Reac Kinet Mech Cat

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Study of adsorption properties of synthesized mesoporous silica doped with dysprosium and modified with nickel

Cited by 6 publications

References 33 publications

The Scientific Basis of Industrial Application of the Process of Selective Hydrogenation of Benzene in Different Catalytic Systems

The Scientific Basis of Industrial Application of the Process of Selective Hydrogenation of Benzene in Different Catalytic Systems

Mesoporous silica gel doped with dysprosium and modified with copper: A selective catalyst for the hydrogenation of 1‐hexyne/1‐hexene mixture

Selective hydrogenation of 1-hexyne/1-hexene mixture on mesoporous silica gel doped with dysprosium, lanthanum, and modified with silver

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