Výsledky vyhledávání - "G. O. Bragina"

Highly Active Bimetallic Single-Atom Alloy PdAg Catalysts on Cerium-Containing Supports in the Hydrogenation of Alkynes to Alkenes

Autor: A. V. Rassolov, G. O. Bragina, G. N. Baeva, I. S. Mashkovsky, N. S. Smirnova, E. Yu. Gerasimov, A. V. Bukhtiyarov, Ya. V. Zubavichus, A. Yu. Stakheev

Publikováno v: Kinetics and Catalysis. 63:756-764

Abstract A study of a series of single-atom-alloy catalysts Pd1Ag3/Al2O3, Pd1Ag3/CeO2–Al2O3, and Pd1Ag3/CeO2–ZrO2 in the selective hydrogenation of diphenylacetylene (DPA) showed a significant (five-fold) increase in activity for the PdAg3/CeO2�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6b3a8f334ed9bf18789c1f04ed4ea9a
https://doi.org/10.1134/s0023158422060118

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Synthesis of Polymer–Metal Composites by the Impregnation of Hypercrosslinked Polystyrene with Palladium Compounds in Supercritical Carbon Dioxide and Their Catalytic Activity in the Liquid-Phase Hydrogenation of Diphenylacetylene

Autor: A. Yu. Staheev, Alexey E. Lazhko, Oleg P. Parenago, G. O. Bragina, Sergey E. Lyubimov, Vadim A. Davankov

Publikováno v: Russian Journal of Physical Chemistry B. 14:1172-1177

Composites—palladium metal particles in a polymer matrix—are obtained by impregnation of hypercrosslinked polystyrene with palladium compounds in supercritical carbon dioxide (SC-CO2) followed by molecular hydrogen reduction. The synthesized comp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e368b253a40f544e37611e61aa0fac5
https://doi.org/10.1134/s1990793120070118

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Formation of Isolated Single-Atom Pd1 Sites on the Surface of Pd–Ag/Al2O3 Bimetallic Catalysts

Autor: Igor S. Mashkovsky, Ya. V. Zubavichus, A. V. Kazakov, Galina N. Baeva, A. Yu. Stakheev, N. S. Smirnova, G. O. Bragina, Andrey V. Bukhtiyarov, A. V. Rassolov

Publikováno v: Kinetics and Catalysis. 61:758-767

The structure of Pd–Ag/Al2O3 samples with different Ag/Pd ratios has been studied by a complex of physicochemical methods (H2-TPR, XRD, H2-TPD, TEM). Catalysts have been synthesized by supporting an active component on α-Al2O3 and γ-Al2O3. X-ray

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c511b49a6b3c984721cb52cf3a5b5f9
https://doi.org/10.1134/s0023158420050080

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Liquid-Phase Hydrogenation of Internal and Terminal Alkynes on Pd–Ag/Al2O3 Catalyst

Autor: N. S. Smirnova, Galina N. Baeva, A. V. Rassolov, A. Yu. Stakheev, G. O. Bragina, A. V. Kazakov, Igor S. Mashkovsky

Publikováno v: Kinetics and Catalysis. 60:642-649

The structure and catalytic properties of a bimetallic Pd–Ag/α-Al2O3 catalyst are studied in the liquid-phase hydrogenation of substituted internal and terminal alkynes using diphenylacetylene, phenylacetylene, 1-phenyl-1-propyne, and 1-phenyl-1-b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81e36234dbdf296d5080b9dc163fa583
https://doi.org/10.1134/s0023158419050069

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Particle size effect in liquid-phase hydrogenation of phenylacetylene over Pd catalysts: Experimental data and theoretical analysis

Autor: G. O. Bragina, Valerii I. Bukhtiyarov, Dmitry Yu. Murzin, Pavel Markov, Evgenii Yu. Gerasimov, Alexandr Yu. Stakheev, Johan Wärnå, Igor S. Mashkovsky

Publikováno v: Chemical Engineering Journal. 358:520-530

The liquid-phase hydrogenation of phenylacetylene (PA) over 1 wt% Pd/Al2O3 catalysts with the mean palladium cluster size varying from 1.5 to 22 nm was studied at 5 bar H2 pressure and 25 °C. Turnover frequency in hydrogenation of the triple and dou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d28aadd47a6b8ceafb2e2f8730daf2be
https://doi.org/10.1016/j.cej.2018.10.016

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Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium

Autor: Alexey E. Lazhko, Vladimir Yusupov, G. O. Bragina, E. O. Epifanov, D. N. Khmelenin, Oleg P. Parenago, Alexey Rybaltovsky, Nikita V. Minaev, Andrey Shubnyi

Publikováno v: Molecules, Vol 25, Iss 5807, p 5807 (2020)
Molecules
Volume 25
Issue 24

To obtain a supported heterogeneous catalyst, laser ablation of metallic palladium in supercritical carbon dioxide was performed in the presence of a carrier, microparticles of &gamma
alumina. The influence of the ablation process conditions&mda

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2843eedca068c038a1d3d04aa24da76
https://www.mdpi.com/1420-3049/25/24/5807

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Highly Selective Pd–Cu/α-Al2O3 Catalysts for Liquid-Phase Hydrogenation: The Influence of the Pd: Cu Ratio on the Structure and Catalytic Characteristics

Autor: Galina N. Baeva, G. O. Bragina, Igor S. Mashkovsky, P. V. Markov, A. Yu. Stakheev, A. V. Rassolov

Publikováno v: Kinetics and Catalysis. 59:601-609

The structure and catalytic characteristics of a series of Pd–Cu/α-Al2O3 catalysts with Pd: Cu ratio varied from Pd1–Cu0.5 to Pd1–Cu4 were studied. The use of α-Al2O3 with a small surface area (Ssp = 8 m2/g) as a support made it possible to m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::970e56c4e0442ce591af5b6fbc37b5e0
https://doi.org/10.1134/s0023158418050105

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Adsorption-Induced Segregation as a Method for the Target-Oriented Modification of the Surface of a Bimetallic Pd–Ag Catalyst

Autor: N. S. Smirnova, A. Yu. Stakheev, P. V. Markov, Galina N. Baeva, Igor S. Mashkovsky, A. V. Rassolov, G. O. Bragina

Publikováno v: Kinetics and Catalysis. 59:610-617

The effect of palladium segregation was studied which resulted from the effect of CO and O2 on the surface structure and catalytic characteristics of the Pd–Ag2/Al2O3 catalyst. The IR-spectroscopic study of adsorbed CO showed that Pd1 centers isola

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20081b33b5cd02b2cbae9d2337cce52f
https://doi.org/10.1134/s0023158418050154

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Influence of the Support on the Catalytic Characteristics of the Deposited Palladium in the Liquid-Phase Hydrogenation of Diphenylacetylene

Autor: G. O. Bragina, N. S. Smirnova, D. S. Krivoruchenko, Galina N. Baeva, P. V. Markov, A. Yu. Stakheev

Publikováno v: Kinetics and Catalysis. 58:763-770

Palladium catalysts on various types of supports were studied in the liquid-phase hydrogenation of diphenylacetylene. Samples of Pd/SiO2–Al2O3, Pd/MgAl2O4, Pd/Al2O3, and Pd/TiO2 were characterized by the chemisorption of the CO and IR spectroscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdac58787b2db1ad6a76a356376773e4
https://doi.org/10.1134/s0023158417060027

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