Výsledky vyhledávání - "G. G. Tsapyuk"

Ni–Fe, Co–Fe, and Co–Ni nanocomposites based on carbon nanotubes in the reaction of CO2 methanation

Autor: Elena O. Kostyrko, Vitaliy E. Diyuk, Snizhana V. Gaidai, G. G. Tsapyuk, Аlla G. Dyachenko, Olena V. Ischenko, Olga V. Prygunova, A. V. Yatsymyrskyi, Tetiana M. Zakharova

Publikováno v: Molecular Crystals and Liquid Crystals. 720:38-46

For effective carbon dioxide (CO2) methanation, bimetallic Co80Ni20/CNTs, Ni80Fe20/CNTs, and Co93Fe07/CNTs nanocomposite catalysts, where subscript numbers indicate the metal content (wt.%), have b...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd14b40c0e2e79d1288c477f3f7e00aa
https://doi.org/10.1080/15421406.2021.1905281

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Dehydration of isopropyl alcohol with activated carbon functionalized with Br- and S-containing reagents

Autor: L.M. Grishchenko, Alexander N. Zaderko, O.V. Mischanchuk, A. V. Yatsymyrskyi, I.P. IMatushko, G. G. Tsapyuk

Publikováno v: Voprosy Khimii i Khimicheskoi Tekhnologii. :90-99

Bromination of activated carbon GSGD was performed and active bromine-containing precursors were obtained, in which bromine is capable of being replaced by sulfur-containing functional groups. Bromination with liquid bromine and a solution of bromine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71797f6860670779da64bbe4823264c8
https://doi.org/10.32434/0321-4095-2021-136-3-90-99

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Synthetic nanodiamonds (SNDs) containing bimetallic Ni(Co)–Fe composites: preparation, characterization and catalytic performance in the reaction of CO2 methanation

Autor: Olena V. Ischenko, A. G. Dyachenko, Snizhana V. Gaidai, Galyna D. Il'nitskaya, G. G. Tsapyuk, Tetiana M. Zakharova, O. B. Loginova

Publikováno v: Molecular Crystals and Liquid Crystals. 701:91-97

In this article, we present the preparation, characterization, and catalytic performance of bimetallic Co93Fe07 and Ni80Fe20 active mass loaded on synthetic nanodiamonds (SNDs) in the carbon dioxid...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45b3015e99c95e4183062c4a629b94cb
https://doi.org/10.1080/15421406.2020.1732566

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Amination of brominated nanoporous activated carbon beads for the preparation of CO2 adsorbents

Autor: Andrii V. Yatsymyrskiy, Vitaliy E. Diyuk, Oleksandr V. Mischanchuk, Natalia S. Novichenko, Liudmyla M. Grishchenko, G. G. Tsapyuk, Olga Yu. Boldyrieva

Publikováno v: Molecular Crystals and Liquid Crystals. 699:20-33

Nanoporous activated carbon (NAC) beads that prepared by carbonization of microporous polymer 2,6-di-tert-butyl pyridine beads were subjected to bromination followed by amination to synthesize the ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40fda2730870102571d676fdc5955359
https://doi.org/10.1080/15421406.2020.1732535

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Effect of ultrasonic treatment on the thermal oxidation of detonation nanodiamonds

Autor: Alexander N. Zaderko, Vitaliy E. Diyuk, O. B. Loginova, Anna N. Panova, Liudmyla M. Grishchenko, Rostyslav P. Linnik, Ruslan Mariychuk, Vladyslav V. Lisnyak, G. G. Tsapyuk, A. G. Dyachenko

Publikováno v: Applied Nanoscience. 10:4991-5001

In the present article, we showed the effect of ultrasonic treatment on the thermal oxidation of detonation nanodiamonds (DNDs) by considering the kinetic aspect of their thermal stability in the air, in the framework of the classical Arrhenius appro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a1ef1ddd33e7c3d8358043729cbba17
https://doi.org/10.1007/s13204-020-01277-2

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Grafting of amino groups onto carbon fibers by bromination followed by ammonolysis

Autor: Оleksandr Mischanchuk, Vitaliy E. Diyuk, Tetiana Bezugla, G. G. Tsapyuk, Liudmyla M. Grishchenko, Anna V. Vakaliuk, Olga Yu. Boldyrieva

Publikováno v: French-Ukrainian Journal of Chemistry. 8:1-11

Because of the low content of chelating groups onto carbon fibers (CFs), their adsorptive parameters are poor, and this has negative effects on their applications as lightweight sorbents. In this work, we established a modification method to incorpor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7374b1d9842b493c8f1fdf0d1d03b56
https://doi.org/10.17721/fujcv8i1p1-11

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Catalytic efficiency of activated carbon functionalized with phosphorus-containing groups in 2-propanol dehydration

Autor: I. P. Matushko, Liudmyla M. Grishchenko, Oleksandr V. Mischanchuk, G. G. Tsapyuk, Vladyslav V. Lisnyak, Vitaliy E. Diyuk, Natalia S. Novychenko, Alexander N. Zaderko

Publikováno v: French-Ukrainian Journal of Chemistry. 7:46-56

The functionalization of activated carbon (AC) by P-containing groups was conducted, and their thermal desorption was studied. Depending on the used method, the functionalized AC contains 0.5–1.45 mmol/g of acidic groups acting in catalytic 2-propa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0c6e9322cf130c2e96ee6fd9207ff862
https://doi.org/10.17721/fujcv7i1p46-56

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Carbon Solid Acids Prepared from the Surface-Brominated Nanoporous Activated Carbons

Autor: Alexander N. Zaderko, Vitaliy E. Diyuk, A. V. Yatsymyrskyi, Liudmyla M. Grishchenko, O. Yu. Boldyrieva, Oleksandr V. Mischanchuk, G. G. Tsapyuk

Publikováno v: Springer Proceedings in Physics ISBN: 9783030747404

In this chapter, we consider bromination with KBr3 and Br2 to prepare precursors to sulfonated nanoporous activated carbons (NACs). Sulfonated NACs were prepared and characterized by N2 adsorption, TGA, TPD MS, TPD IR, elemental analysis, and also us

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0c580c57b0868e8e032da97d02d71d9
https://doi.org/10.1007/978-3-030-74741-1_26

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Oxidation of Sulfurated Polyacrylonitrile-derived Nanostructured Activated Carbon Fibers for Thermal Resistant and Multifunctional Solid Acids

Autor: Anna V. Vakaliuk, Oleksandr V. Mischanchuk, G. G. Tsapyuk, Vitaliy E. Diyuk, Liudmyla M. Grishchenko, S. I. Chernenko, O. Yu. Boldyrieva, A. V. Yatsymyrskyi, Vladyslav V. Lisnyak, Tetiana Bezugla, Ruslan Mariychuk

Publikováno v: 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP).

The production of propylene by dehydration of 2-propanol at solid-vapor interfaces, as an example of the acidcatalyzed surface reaction, was explored by using sulfonated polyacrylonitrile-derived activated carbon fibers (PAN-ACFs). To prepare these c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2fd61e1ac66834d5286f7d51118517c
https://doi.org/10.1109/nap51477.2020.9309617

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