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

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 γ-alumina. The influence of the ablation process conditions—including supercritical fluid density, ablation, mixing time of...

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Autores principales: Parenago, Oleg, Rybaltovsky, Alexey, Epifanov, Evgeniy, Shubnyi, Andrey, Bragina, Galina, Lazhko, Alexey, Khmelenin, Dmitry, Yusupov, Vladimir, Minaev, Nikita
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7763076/
https://www.ncbi.nlm.nih.gov/pubmed/33316997
http://dx.doi.org/10.3390/molecules25245807
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author Parenago, Oleg
Rybaltovsky, Alexey
Epifanov, Evgeniy
Shubnyi, Andrey
Bragina, Galina
Lazhko, Alexey
Khmelenin, Dmitry
Yusupov, Vladimir
Minaev, Nikita
author_facet Parenago, Oleg
Rybaltovsky, Alexey
Epifanov, Evgeniy
Shubnyi, Andrey
Bragina, Galina
Lazhko, Alexey
Khmelenin, Dmitry
Yusupov, Vladimir
Minaev, Nikita
author_sort Parenago, Oleg
collection PubMed
description 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 γ-alumina. The influence of the ablation process conditions—including supercritical fluid density, ablation, mixing time of the mixture, and laser wavelength—on the completeness and efficiency of the deposition of palladium particles on the surface of the carrier was studied. The obtained composites were investigated by scanning and transmission electron microscopy using energy dispersive spectroscopy. We found that palladium particles were nanosized and had a narrow size distribution (2–8 nm). The synthesized composites revealed high activity as catalysts in the liquid-phase hydrogenation of diphenylacetylene.
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spelling pubmed-77630762020-12-27 Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium Parenago, Oleg Rybaltovsky, Alexey Epifanov, Evgeniy Shubnyi, Andrey Bragina, Galina Lazhko, Alexey Khmelenin, Dmitry Yusupov, Vladimir Minaev, Nikita Molecules Article 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 γ-alumina. The influence of the ablation process conditions—including supercritical fluid density, ablation, mixing time of the mixture, and laser wavelength—on the completeness and efficiency of the deposition of palladium particles on the surface of the carrier was studied. The obtained composites were investigated by scanning and transmission electron microscopy using energy dispersive spectroscopy. We found that palladium particles were nanosized and had a narrow size distribution (2–8 nm). The synthesized composites revealed high activity as catalysts in the liquid-phase hydrogenation of diphenylacetylene. MDPI 2020-12-09 /pmc/articles/PMC7763076/ /pubmed/33316997 http://dx.doi.org/10.3390/molecules25245807 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Parenago, Oleg
Rybaltovsky, Alexey
Epifanov, Evgeniy
Shubnyi, Andrey
Bragina, Galina
Lazhko, Alexey
Khmelenin, Dmitry
Yusupov, Vladimir
Minaev, Nikita
Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title_full Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title_fullStr Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title_full_unstemmed Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title_short Synthesis of Supported Heterogeneous Catalysts by Laser Ablation of Metallic Palladium in Supercritical Carbon Dioxide Medium
title_sort synthesis of supported heterogeneous catalysts by laser ablation of metallic palladium in supercritical carbon dioxide medium
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7763076/
https://www.ncbi.nlm.nih.gov/pubmed/33316997
http://dx.doi.org/10.3390/molecules25245807
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